I am kind of in a similar situation as you. Got a baby coming in a couple of weeks, and my truck still needs a lot of stuff. My plan is to go ahead with the body work and get it primed and ready for paint. Then, I will start tackling the wiring/EFI/brakes, etc. I am going to get the wiring harness from WCB. It sounds like it will be more work than some of the other "plug-n-plays", but it is also about $600 less. I would say to just go ahead with what you are planning - do the body work and get it done. Then, as horsn said, scavenge ebay, pick-n-pulls, etc for parts.