1. body work is probably the biggest on your list, its by far teh worst stuff to do, especially since it sounds like you already have alot of rust covered up by bondo.
2. diddo^
3. interior is pretty easy, just find a donor car
4.donor car
5.if teh battery is charged, it has nothing to do with the alternator, its teh start, take it off, inspect the solenoid
6.donor car, you can test it thought, buy a cheap voltmeter, lift off the back seat, unscrew the bracket for the fuel sending unit, get a reading at the very bottom, and top, by moving the float, see how the voltage changes with float position (look for erratic readings, spikes, drops, etc.). its just a basic potentiometer.
7.if you car shakes under braking, probably wont have anything to do with motor mounts. you probably have excessive run out on the rotors (warped). get new ones. does your brake pedal pulse under braking? and you dont need a diagram man, just look for the big metal brackets attaching the engien to the body, theres one on the front, back, left and right
8.check fuses first, then go from there (switch, wiring, etc). get soem socket grease for the bulb sockets to as itll probably need some, which could cause the problem.
9. check fuses/wiring
10.how much mileage is on teh car, could probably use a rebuild. could be rings or valve stem seals.
11.where's it leaking from? probably output seal
12.check fuses, switches, wiring
13.donor car
14. A/C doesnt heat, it only cools, heater heats

. check your blower motor. A/c probably needs a recharge
sincet he majority of your problems seem to be electrical, brush up on the basic fundamentals, buy a haynes manual, use the schematics, itll be your best friend. unless you have access to mitchell on demand, or somethign similar (all data)