Some considerations…your paint is 10 plus years old with the accompanying oxidation and scratches that throw off the luster. You may want to use a mild cutting wax and/or clay bar it. Then apply a really nice wax/polish and buff the bejezus out of it. This will produce excellent results. There is so much crap on the paint you cant see. Take a piece of cellophane and run it along your paint. It would shock you how much grit and imperfections are there. You can feel it through your finger tips w/cellophane.
I paid a local detailer to do this to our 2001 red Vette and it was WELL worth it. I also clay bar my Ram every year. Silver is easy compared to black though.