I haven't actually put a plumb line on the one I have, and Cannondale doesn't give a spec, but just sticking a ruler on it looks like about 25 mm setback. So in the range of 30 mm would be good.

I'll probably wind up with that FSA, but I need a few days to get my head around the price.

What's everyone's experience with shimming, especially with a carbon frame? Would that cause problems?