Xenons are an absolute must, IMHO. Once you've had a car with 'em, you'll never want to go back to halogens.
Reflex Silver looks the mutts, doesn't show up the crud, has the "Q car" look to it, and would be an easy re-sell colour.
The ICE . . . don't really touch aftermarket stuff myself, but I have the SatNav and 6cd changer, and it is fairly good - not on a par with the Bose in my Audi, but not far off.
Don't go for the "Soundpack" option, others have said it's pants.
I-pod - what's that then . . . some kind of manly beer belly - it's mine, and I'm proud of it . . .

The highline is good for twiddling with some settings which would otherwise require a trip to the stealer.
Oh, one thing you didn't mention -
DSG - feckin' go for it - it's superb!