Well, I pulled the trigger..

[John Y]

Thanks everyone, for your enthusiasm and input; I'm keeping the Boxster logo, and I think I'll leave it in the stock color. Still on the fence about wheel size, though from the weight info in this thread, it doesn't sound as though I would notice the increase in rotational mass with the 18s. I may need to try to set up a back-to-back drive with my dealer...time to give my salesman a call anyway and see what the cutoff date is.