Danc...
1) DSC is a standard staple in all late-model BMWs. There are a few iterations/evolutions since then. The e90 has the latest (if not one of the latest versions) which replaces ASC with DTC.
2) FTM is standard in all RFT equipped cars. This is critical as one is not able to visually discern a compromised RFT over an undamaged one, so this is for your safety.
3) Restting is done via your OBC stalk. It takes a couple of seconds to do it, so its a no brainer.
4) All E90s are equipped with RFTs so all E90s have the FTM function
5) Type 162's are staggered and 18" diameter. As long as they are straight, same size and of high quality, I see no problems in running replica wheels. As noted, aftermarket wheels do not affect DSC/FTM. Small variations in rolling diameter affects speedo readings. There are e90s running on 20" wheels, with no problem.
6) People have opined that a switch over to non-RFTs have netted better ride, better handling (less unsprung weight) and better fuel economy.
7) For a subtle styling mod, I recommend a Hartge lip and the OEM rear spoiler. The OEM CF front splitters (2pcs) are nice as well. For something a little more agressive, try the M-Sport kit. Other kits like Breyton, ACS, Hammann and Kerscher starts to look agressive.
8) Monaco Blue is a dynamic color, in certain light it looks almost black but in direct sunlight, radiant blue come alive.
More Monaco Blue pics here:
http://www.e90post.com/forums/showthread.php?t=244
I think the CBU units remain attractive at the discounted pricing (granted a MY behind). Despite the 'restorations', the car would still be under new car warranty for various issues.
Good luck and happy e90 hunting.