Congrats and nice choice of colors.
However do bear in mind the RS wheels, should you trade, are PAINTED. The reason the polished wheels are more is simply because they aren't painted like the stock or RS wheels.
IMHO painted wheels = no. Powdercoated, chromed, polished, brushed, natural, all ok by me, but paint chips and cracks and cleaning brake dust off it you might as well take sandpaper to it for as long as it will last like that.
As for hidden features. Um, dont forget to pair your phone for bluetooth. Don't forget to store some names/numbers to hands free dial (press the talk button on the wheel and say store, then follow the prompts). Um, if you want the nav to not tell you upcoming turns say MUTE DIRECTIONS when you go to setup a route (I think you can do it at any point by pressing the blue button and saying that, not sure though, only used it once so far, less than a month into owning mine lol).
Nothing else comes to mind right away.