Hey guys, I don't know how many of you still look at this thread, but I finally finished redoeing my rims! I think they turned of awesome. To prep them I used a wirebrush on an electric drill, and then sanded with 100 grit and the 500 grit. It took me a while, but eventually I had almost all of the old paint off and a smooth surface to work with. After prepping, I put 2 coats of gray duplicolor sandable primer on and touch-up sanded some spots if needed. Then, I put 3ish coats of Duplicolor gunmetal grey wheel paint, which is, by the way an awesome looking color (I recommend it, especially on a silver car). Finally I put 2 coats of duplicolor clear coat on, which gave the rims an awesome shiny chrome look. Overall, I am very happy with the final product. Besides a few scratches missed while sanding and a few nicks from the tire shop, the rims look just as smooth as stock. Hopefully they last a while. This project did take way longer than expected, but that being said, I am somewhat of a perfectionist. Thanks for the suggestions everyone!