apologies to the op as we are way off course, but I suspect you have a feeling for what you are in for.
Ink- bummer about your buddy getting bamboozled. Sounds like in that case the body shop owner that refused is doing him a favor. But if he is OK with that level of work (nothing wrong with that) I am sure a maaco or equivalent will happily finish it up. If he is looking for something beautiful like your car, he is going to have to pay someone to almost start over.
This gets into why I prefer to do the work myself. I have been burned by just about every type of car professional, from the jiffy lube, dealership, local mechanic etc.
So for matters of importance I learn to do it myself, or do incredible amounts of research/ seek referrals for anything I have to outsource.
As mentioned here and in other threads, doing it myself may not be the most cost effective; a significant investment in time and tools is needed for each auto discipline. But I do this for myself, it is my hobby- my version of football or golf or whatever else people do with their spare time.