You want to be able to get some sort of work for the three of you, so buying a Sony F35 is an outrageous idea. Don't do it!!! Your money would just be going to waste, and you wouldn't be recouping your costs.
At your level you're looking at lower budget jobs:
Weddings, corporate shoots, small budget adverts, low budget docos, reality tv, etc etc
Sony FX6 would be ideal for this! But I fear would blow your budget out once you consider everything else.
Very broadly speaking there are three broad classes of equipment you need even as a low budget OMB videographer:
1) camera body + camera "stuff" (lenses / batteries / media / support gear such as tripod etc)
You could go heavy in one of these, or even all in on just one of these (i.e. ONLY get lights, and focus on becoming the local go to indie Gaffer guy), or you could try to go fairly equal for each so that you're well rounded for anything.
I'll give a fairly rough idea of if you go heavy, balanced, or light on each.
1) mirrorless camera body (Panasonic S1/S5/GH5/GH6/G9 or Sony a7Smk3/a7mk4 or Fujifilm X-T3/X-T4 are all good solid picks here. Or the Blackmagic Pocket 4K, or even the Pocket 6K Pro. Quick shout out to the Z Cam E2-M4 or E2-S6 as well) + lenses + monopod + tripod
2) a single 1x1 LED panel and light stand, maybe some DIY modifiers / cutters / etc (perhaps get some old cheap secondhand tungsten lights for next to nothing, seeing as the likes of red heads are being literally given away)
3) stick with your rubbishy (am sorry, but it is rubbish) Zoom H6, but get 1x Sony UWP-D21 (the best prosumer wireless you can get!) and Deity V Mic D3 Pro (plus extension cable, plus aluminum boom pole and C Stand with boom pole holder)
1) get a secondhand Sony FS7 (these are the classic workhorses which everyone seems to own! The #1 camera for many years in the low/mid budget market. Only recently are people moving away from the FS7 to a FX6/FX9 instead). Maybe take a look at getting lucky on a cheap C300mk2/F5/F55 (if crazy lucky, maybe even a Panasonic Varicam LT?). But outside these four cameras I've specifically mentioned, don't consider anything else! You'll be excluding yourself from too many jobs, as those four cameras cover the broadest range of likely work you could do. (hmmm.... maaaaaybe I could let the URSA Mini Pro sneak in there as a bonus mention. Maybe. But definitely don't get the older URSA Mini, the non-Pro, as shooting without internal NDs is too much of a hassle for this type of work)
2) get more in the way of lighting modifiers / cutters / etc, and get also an Aputure 300D and Aputure LS60D (together with their accessories, softbox etc), and of course a 1x1 LED panel.
3) Zoom F8n or Zoom F6 or MixPre3/MixPre6 (the F8n would be easily the best out of these four. Unless you're wanting to use it paired with a mirrorless, mounted under the camera body itself. Then get the MixPre3, because it is super small). Get 3x Sony UWP-D21, 3x Deity W Lav Pro, get a carbon fibre boom pole (at least 3m, ideally one that is 3m and one that is 5m), C Stand (and boombuddy), Deity S Mic2, Sanken CSM1, blimp, and all the various accessories etc. (bag/batteries/media/etc)
Heavy weighting (i.e. now you're entering into the mainstream low/mid budget range for normal working professionals) listed out for each (these will exceed your budget, but am trying to stick with the lower budget options being selected. Not going crazy here! Always shooting the more "budget" options, so you at least should only be going over budget by "a few" thousands. But it illustrates why you'd have to focus on just one of the three options, you couldn't do all three at once, at this point in time):
1) Sony FX6 / Sony FX9 / Canon C300mk3 with lower budget but decent grade owner-op level lenses (i.e. you've probably spent more on the lenses than the body itself, but not silly money. We're still selecting the most budget level possible PL lenses. Such as DZOFilm CATTA Ace FF 35-80 & 70-135mm T2.9 PL Zooms, plus say the Tokina 16-28mm T3 PL wide angle. Along with a set of primes, such as the DZOFilm primes: https://www.bhphotovideo.com/c/product/1679957-REG/dzofilm_dzo_v21k8pli_vespid_prime_cine_8_lens.html Of course there many many many other options than DZOfilm! Am just mentioning them because they're cheap, we're lucky that you're spoiled for cheap choices now in PL lenses! Such as Xeen, Meike, DZOfilm, etc... all of these simply didn't exist just a few short years ago!). Of course all the usual supporting gear: 100mm bowl tripod, gimbal, dana dolly, lots of V Mount batteries (or Gold Mount), media, monitors, wireless video feed, etc etc (the camera body is only going to be a small fraction of the total cost)
2) you'll likely be selecting out three of each of everything Aputure makes (again, I'm just picking Aputure yet again because they're a very very affordable brand which still has a solid reputation, just like why I was referring to DZOfilm before. Am not telling you to get ARRI SkyPanels here! As not even if you quadruple your budget could you go all in on those for everything. Am not even including a single HMI in this light! Truly keeping it very much lower budget tier here), Nanlite PavoTubes (2x 30C, 2x 15C, 2x 6C), dozens of sandbags, a dozen C Stands, three Combo Stands, 12x12 frame with a few material options, and lots more cutters/modifiers/etc And of course a Ford Transit van to carry it all in! (or similar)
3) Sound Devices 833 paired with the Sound Devices SL2 (or instead of Sound Devices 833: Zaxcom Nova, or Sonosax SX-R4+, or Aaton Cantar Mini), with 1x Lectrosonics DSR4 + 1x Lectro SRc (I'd like to select a second DSR4, but keeping costs low! So going for the older SRc instead) + 1x Lectro DPR + 1x Lectro SSM + 2x Lectrosonics LT + 1x Lectro LMb (I want to say Lectrosonics DBu instead of Lectro LT or LMb... but we're trying to keep costs low here!) + 1x Lectro SMDWB (this is the wideband version of the classic workhorse SMQV, and would be nice to have more than only just one here... but again, keeping costs low! That is why I put in a cheapie Lectro LT in there for instance), + 7x DPA 6060 lav mics, + Sanken CS3e, Sanken CS1e, Sanken CSM1, Deity S Mic2, blimps, 3m carbon fibre pole, 5m carbon fibre pole, media, batteries (many many many! I own over a 100x AA rechargeable batteries, just as an example), 1x Lectrosonics IFBT4-VHF, 3x IFBlue IFBR1C (half the price of the usual Lectrosonics IFB R1B!! Nifty product that only just came out. I only put down three here, as that should cover most of your low budget jobs, although I personally own a couple of dozen of these IFB receivers)
(note: of course you don't have to go with Lectrosonics wireless! Shure AD5XD is super appealing too, Wisycom is good as well. Audio Ltd is worth a look too. And naturally if you chose the Nova, then you'll be "forced" to use Zaxcom wireless as it would be silly to own a Nova and not use it with Zaxcom wireless)
Overall, I think you should go with the path of going super light in all three areas. Spend as little as possible, leave the rest of the money untouched for another couple of years.
And work as much as you can on other people's shoots (even if just as a PA / 3rd AD / runner / actor / extra / whatever), so you're observing and hopefully using THEIR equipment. And learning on it.
Then you will figure out what is good or not for you.
Plus you might find yourself going off in directions you never realized.
What if you realize you LOVE lighting?? (and/or there simply is a bigger gap in the market needing a gaffer, than anything else you're interested in) And you decide to become a Gaffer instead of a DoP. You're a bit screwed if you're spent already 100% of your budget on camera gear.