IF you do actually output or go back to film you can BB the internegative or realese print. However this would require even more testing and more dollar bills, but it could give you a really cool unique outcome. If you have the budget try it. Test It.
I think the best way is to shoot as clean as possible, get you're exposures perfect, Video doesn't recover from overexposure. And puling up the black levels reveals noise and a greyer rendition.
Then increase the contrast to your preference, and desaturate it accordingly. This should give you more freedom during color correction.
If you want those deep crushed blacks be careful and make sure your actors have enough fill. I've needed the background to fall of into complete shadow and I knew i would do it in the timing, but when I crushed the blacks in post my actors face became a little too dark on the shadow side.
A good on the fly way to check that is to drop you're pedastal setting down. It crushes the blakcs and it will give you an idea of how much fill you might need to add.