I think any standard tripod will work. I have the 814e and it works on all my 35mm tripods.
For sound I am using Sony's MZ RH1 HiMD minidisc and mics that I made using electret mics. Minidiscs are fairly cheap. I paid $325 for this one and the 1GB optical media disc can be had for $5-$7.
Editing software is the expensive part. Sony now has professional rated software but it costs an arm and leg;
Sound Forge Editing s/w is about $275, and Sony Vegas +DVD starts at $575 unless you are a student and can prove it.
Of course, there are many other softwares available, especially if you are using a Mac.
I can't help you on choosing film stock. Suggest you go to Kodak.com and poke around.