Yeah, that's fine. As long as the weather cooperates (not raining), I can paint them in batches of the same color. I will also use an adhesion promoter clear base primer that I recently got and like. My only question is regarding the paint itself: do people prefer for it to be Montana Gold? I have no experience with how well that paint sticks to plastic and lasts on it with normal use. I'm happy to use it though if it's the preferred kind, but it'll need to be ordered on-line (no stores near me). I assume there's probably a primer for it as well, if it requires a primer over plastic. If you want, let me know what your painter was using. Otherwise I can do oil enamel, as that's what's been accessible to me from nearby auto-supply stores and Home Depot (and some from Amazon).