Mario, I have a setup similar to yours. The one thing I would sugest is find a jewlery supply store and oick up some silver polishing compound. It is very light and won't leave tiny scraches. I didn't like the home depot polishing compounds. I can pick some up from a store here in Phx if you would like and send it to you.

I prefer Green compound over the white stuff.. I find that it gives a nicer color than the white stuff does. I've heard that professional polishers use something even finer, some sort of alumina stuff. I use dremel wheels, which need to be replaced a lot more often than your big wheels, but keep in mind, when your wheels start accumulating bits of metal in them, the wheels themselves will end up scratching what you are polishing, and same thing when the compound gets thin.. so load it up often.