You will find that the paint coating on the wheels is very thick, unless the wheels are heavily kerbed then all marks should just be in the paint coating. My st170 alloys were qite badly scuffed, I blasted the paint off and the actual metal was mint.

As above though, by the time you've bought all the materials and spent hours doing it, it would be far more cost effective to get them done professionally! When I bought all the materials it came to around £100, and I didn't need any rubbing materials as I have a shot blaster at work and have access to as much wet and dry paper as I need!