Are you in HS? If so, try taking an auto class at school or at the local JC. I bought a '72 blazer when I was 17, drove(read beat it down) for a few months, and then spent a year wrenching with anyone that would let me under their car with them. I learned a lot my senior year, the biggest thing being that I am color blind and incorrect wiring catches things on fire. Now I pony up the extra dough for harnesses.
Lastly, I concur with the 3-4" with 31's. Seems that most of the stuff on this platform is plug and play. Good luck with whatever you decide on doing.