Good spray paint.

all above good advice. if you get a garage to use, great! as the filler tends to absorb moisture and should be kept dry. if spraying in the garage, remember to set up fan system to get rid of fumes, and yes that auto paint is Bad on you! also you need good light to see what you are doing!
no doubt, if you do all the work of getting the car down to bare metal, or at least a good base,,,, you're far ahead to use epoxy primer, a high build primer, a sealer, and nothing wrong with a single stage urethane finsh, if you don't want the bc/cc. IMO
but realize it will take a good compressor to get it down to bare metal.
and like the other guy said, its a lot different spray canning flat vs a gloss. I vote don't use the spray cans!!!!!!