If you do want to do as much work as you can, find and talk to your body shop first, whether it is the local collision shop, a high end classic car paint shop, or your local high school/college auto body shop. Figure out who you will be working with, then follow their process as you disassemble. In the meantime it is hard to go wrong with ziplock bags, labelled with Sharpie markers, with just the bolts from each piece removed. Number the bags and mark an illustration of the car with them as well. Once you have 1,000 bolts laying around, it's amazing how some of them look similar to others.

Take photos...a lot of photos...even ones that you don't think are significant.