I know this is a old thread but if smeone finds any use from it great, you might look into a little Preval sprayer for small jobs, just Google Preval sprayer, they are available at Sherwin Williams (and other stores) and I have used them with good success as long as the paint is thinned properly, they are cheap and can be cleaned out and sprayed again. you can purchase epoxy & spray it with the sprayer as well they will cost you about 10 bucks and the aeresol charge can be purchased seperatley. And no I would never use standard rattle can primer underneath anything, if it isn't catalyzed its gonna shrink!