Routing dimensional letters into pvc panels - outdoor installation. Panels are 3' x 4' w/shape. What paint would be recommended for best coating out 1st with roller. I was going to use 1-shot Chromatic Bulletin but their website cautions that this is intended for short term outdoor only. "Louie" on the 1-shot website says I should use their Lettering Enamel for coating out. This comes in pint containers - expensive way to go! I really need to go the roller rout so any suggestions for paint and roller type (foam best?) are appreciated.