X2, needs to be more porous, it would be limited to how well the paint stuck, if your going to resincoat the whole thing anyway, just rough it up with some 60-80 grit saning and use colored resin, this will eliminate a step and give a finished surface, I would recommend mixing in some Duratec to help it flow out better...They always say a paint job is only as good as the prep., you could say the same for any fiberglass work...
Good Luck...

GT