You can do this in many different ways,But you would want to do all your cutting
first,Thats if you plan on putting in extra fans and stuff. Next primer everthing
inside and out real good. then you would want to start with some 180 grit sand paper.. sand down the rough stuff, then put another coat of primer..
Also they make primer in enamal and Lacqar... This is up to you on which you decide,You can put enamel paint over lacqar primer,but you can't put lacqar paint over enamel primer.. It will bubble the paint. If you would lake a real nice candy clear coat paint job, then you would use lacqar primer, and lacqar paint
with a clear..