RE: DO I NEED A PAINT PRIMER . . .
Check out the Hangor 9 Ultra Coat paints or the Top Flite Monokote matching paints, I think they are called Lustercoat. I have really liked the Lustercoat stuff as it matches the Ultra Coat colors better than the Ultra Coat paints. The color matches are typically a few shades off one way or the other. Good Luck, Dave