I have sprayed primer before, but have usually left the paint to the professionals. I picked up a new project that I'm going low budget with. Basically having some fun with it doing all the cosmetic stuff myself. So I am looking for some advice. It is a 1956 Pontiac going for a suede dark blue. I plan on painting it outside. My questions are:

About how much paint should I buy to paint the whole car? 1qt 2qt 1gal, etc?

what type of tip should I have in my gun?

Best way to avoid water droplets in the paint?

Any adjustment to hardener/reducer ratios for painting outside?

Any sorts of advice would be helpful. Thanks.