depends what sort of primering, if you hav ea good smooth surface just till coverage, if you are doin a surfacing with a high build definiattly need 2-3 coats for material to sand, most paints you paint to coverage wich usually happens with 3 coats, 1st being a tack coat not for coverage just for a surface to have the other paint to adhear to, next one is little heaver, ame with the 3rd. and feel free to PM me if you have any questions huie.
and thanks guys im havin a lot of fun building this, i actually stoped working on my bandit T/A project LOL