If you haven't already, I'd make sure you're making a parts list of things you need to buy, then if you find a deal on something you can jump on it. Check each thing off the list as you acquire them. Nothing more frustrating than to go to put something together and find you forgot some little bit that you can't assemble it without having......
Other than that....
I can see why these are so difficult to redo, the wiring alone would give me pause! You think you're taking a lot of pics but I guarantee you you'll wish you took more!
One more small tip, I tend to leave things in assemblies as much as possible, till I'm ready to rebuild them, then I clean and rebuild one side at a time with the other available for reference. The more of these assemblies you can complete the easier it will go back together when it's time, and you can work on them while you're waiting for parts to arrive or body work to be done.
Good luck, you have a very long road ahead, but don't get discouraged. Just work on one thing at a time and check it off the list.