Excellent choice! I also adopted an '08 M3 Coupe this month, here in the West Coast. Mine is Space Gray / Black interior with carbon trims. She is GORGEOUS and very athletic. No fake stuff on her, just pure stock. One mod I was looking to put on her is replacing the light switch to a Euro Switch, which will enable the fog light in the built in rear light. This will add visibility during foggy days in the early mornings on my way to work, as Gray disappears in the fog and darkness. You'll find this DYI mod in Bills Website along with other nifty and functinal DYI mods. (
http://www.billswebspace.com/bmwm3.htm) Have fun with your M.