The biggest PITA part of this can be running the wiring... my brother did it on his 85... whatever you do, dont cut the wiring harness ANYWHERE near the door hinge... its a royal PITA to run it, only to find a connection has slipped and you need to pull it apart
easiest thing to do is to pull doors (or just power guts) from a truck/sub, and then grab the under-dash harness as well. Probably will want to think about new window motors $50ish (NAPA), as they tend to crap out.
Door panels can either be expensive, or annoying and a lot of work. Can go the donor truck route, find a good set, clean, then use vinyl dye to color match, or can buy them new for $$$ (lmctruck or chevyduty)