Best way to prep rallye wheels for paint?

I paid 40 bucks to have 4 sand blasted all over ( no tires ). The bead surfaces were in such bad condition I'm not sure they would have held air.
After I spent a few minutes with a small pick digging the remaining sand out out of the nooks I spent 3 cans of Rustoleums rust reformer primer on the 4 wheels. Made sure those nooks were completely coated. 2 cans of color on faces only.