1. Ride the TCR and you will find out what your capable of. It is useless to ask that sort of question due to so many variables.

2. SPD-SL's are great and at $62 it is a a bargain.

3. Not sure if the ELITES are bombproof but the SL's are tougher. As for bunny hopping speed bumps and etc..I personally would not; however, it is your bike do with it as you please.