Re brake temps. I'm running new DBA T3 4000 series 312mm rotors with Brembo 4 pot calipers and QFM A1RM pads on the front.

So, swapping the wheels back from the semi slicks to the daily's after Lakeside, I checked the heat paint markings on the new rotors. To my surprise, the green paint, rated at 460c has turned white which means it's exceeded that temp, though the Orange (550c) and Red (630c) are still those colours. "The ideal temperature condition for high performance brake pads and rotors is between 458 oC and 550 oC which is when the peak friction condition is achieved."

Thermo-graphic Heat Paint on CLUBSPEC & HEAVY DUTY Series rotors - Disc Brakes Australia

Sweet, sounds like I got something right