Here's a good link that de-mystifies the brake temps as commented by the pros from Wilwood and Pagid. Note the comments on street vs race pad operating temps, how best to measure them and importance of choosing a right pad.
http://cartechstuff.blogspot.ca/2016...tures.html?m=1
To me brakes are like tires: you can gain pace by running slick but they may cord in 2 days. With brakes you can use an aggressive race pad but it will wear out fast and eat your rotors faster. It is always a compromise.
OTOH it seems stock brakes are pretty good and Provoste even uses them with slicks. So no reason to be overly concerned it seems albeit the above advice to use a good fluid is obviously a must.
Beyond that, one can experiment with perhaps a better pad, or a disk, or both. Just don't expect miracles with 3747lb car
Brake temps (and all the other temps) will depend on one's driving level, style, track, ambient, humidity, traffic vs clean air, etc.
All discs/rotors will develop heat check micro cracks. The key is to monitor them and once they get too wide or start running towards the edge then it is time for a new set of rotors lest it could split.
It is important to cool thing down properly, especially if one doesn't get a full lap to do so. Regardless and as a rule of thumb I've been using oil temp as an indicator. If after my cool down lap oil is above about 212F then I'd go for a ride in an empty paddock or access lane etc until the temp dipped below it. Then park in my spot trying to coast in and use as little brakes as possible. NEVER use a parking brake as it will warp R Rotors. Then after 10mins or so, I'd roll the car half a tire length to reposition calipers to the opposite side of the rotor (use a wheel stop). That's about it.
Always inspect your pads, rotors, tires and wheels after each stint plus hot tire pressures. Re-torque your wheels after they cool down. Check oil. You're done. HAVE FUN!