I agree with churchill, build from the frame up.That's why I'm not answering. He gets my vote.
good answer. Of course back in the day when I owned muscle cars (yes, I had several) they came from the factory that way. My favorite was my '67 GTX . It had a 426 Hemi and was awesome!
The best quality braking system you can do should be your first priority.
...that it is a Camaro. That is the most important thing.
The looks of course. Use as much chrome as possible and it will run awesome!!
A car with a good frame and as little rust as possible and if you are thinking about selling it later, one that is a desirable model. Do the engine and drive train first then the body work that way you won't scratch the paint and trim.