I just recently upgraded my front discs, calipers and pads - one size up - so 9.3" rotors to 10.3" and the corresponding calipers etc.

For my EG on the road this braking is CRAZY good... it is so good i find myself re-aligning the way i drive my car cos it actually shifts too much weight at times LOL...

So going back to your point, answer EKslut's q's cos they are good ones... dun overkill your situation unless you need to... having said that my brake upgrade is the best mod i have done to date.