If for nothing else, (and this is where I deviate from the above postings) record crappy audio on the tape *atleast*. This way you'll have something to use during syncing later if its an issue. Also, if its even remotely possible, tape in Hi-8/Digital8 and not the standard 120min. Why? You get better resolution for your image and more overall detail (notice I didnt say the word "noticable", I'm working on stats for a reason). Its the same reason people tape in 24/96. Not because we can tell *that* much of a difference, but because it is better, and given the right equipment, you can tell its better. Same applies here, you want your master to be as good as you can get it to be. (or atleast I've always had that philosophy)
I worked with VHS, SVHS, Beta, and U-Matic (the name excapes me, but they were almost a full inch and were used in the 70s/80s) and digital processing at work and I'd kill for something like Digital Beta or something else highend when working with the final output being on DVD.