Looking to buy/build 500-600 fwhp 360

It sure does add up, it seems like the bodywork is the big unknown followed by re-chroming stuff. But there are always multiple what I call "the 500 dollar phone calls", which derails every budget.
I ah decided about 15 years ago to do my own paint and body work. Im not done but dern close. This was after I almost begged my buddies dad who was a pro body guy to paint it,he wasnt into it and now hes like 75 so definitely not into it. I donet want the car in body shop jail so its in my garage and i work on it as time permits and its getting there. If it turns out nice thats a plus but I am going for driver quality..as in if there are satone chip in it Im not going to blow a gasket LOL!

Ive considered what Im doing a repaint, but i took it down to metal and did weld a quarter on it etc.