On my 2010, I had my wheels (OEM 20'') plastidipped. Beside having cleaned the rims, no prep has been done. The results were very satisfying. You can see a picture in October ROTM thread... Zoom on the picture and you will see the results. Save your money, plastidip will hide most of wheel damage... And mine were pretty much damaged, surely more than yours.
With plastidip wheels, you can use tire shine and make them shine very nicely... In the winter though, they become greyish with calcium and salt, but easily cleanable.