Thanks for taking the time to update!
What made you steer away from the N52? At least runn it until its dead- though that could take a while, all these 6-in-a-rows seem to last forever.
Also, I think the 135 brakes will be great for you- the car will weigh 5oo pounds less than a 135i, and I am sure your car will have great ducting.
330i ~ BMW Perf. Susp. ~ M3 Front susp ~ BMW Perf Exhaust ~ 3.38 lsd ~ SF71 Alf CSL reps ~ Continental Extreme DWs ~ Looking for e93 M3 fsb and e90 M3 rsb