I now have 355mm fronts and 300 rears- as the rears are bigger and I assume more powerful do these effect the brake bias at all, ie if I brake really hard will I;

A-Get forced into the seatbelt and my eyes pop out?
B-slide sideways for 100ft before coming to rest in a ditch?

I havent driven it yet with both front and rear and wondered if any changes need to be made before I do?
Cheers