I run crossed drilled rotors, and regular textar pads, and I've never cooked them at the track. Crossed drilled rotors are the key to keeping your brakes cool. As for your limp issues, they might be tune related, as I've never experienced this. My tune raises boost via a T-map(?) sensor, and therefore never messes with the ecu. with the max setting I am able to run 12.7psi. If you want to run more than that at the track, you might just want to do a complete flash tune, like GIAC. I think their stage 2 race tune, has just been released.
E90 335I: FBO +wavetrac LSD
E92 M3: K&N, V1, Yokohama AD08