Nice one! I was so close to going with that colour myself.
I ordered a 320d, and ended up changing it to the 330d... the sports transmission is included and some other options I ordered were cheaper, so the £5k difference dropped down to around £3k off the top of my head.
(not that I'm trying to get you thinking about that!)
F10 M5 Competition White / Sakhir Orange
Loaded, Akra carbon titanium exhaust, Carbon trim, Carbon spoiler, RKP carbon front lip + diffusor.
F31 330d M Sport (Alpine White / Red)
Loaded, 405M 20", M perf: skirts, brakes red.