As John said allot of Prep , and there is only One primer I know of
designed specificaly for sanding with 220-320. Benjamin Moore Enamel
Underbody. Maybe 25 a gal. but worth every penny. Latex cant finish
like oil, it cant flow long enough and just isnt designed for it . You
would of been better off getting a bunch of spray cans of paint . You
want a real finish Purdy doesnt make the best hair brushes, you are
talking 50$ . HVLP of spray cans would be your best bet. For you with
a little practic spray cans.