You're going to get that until you increase the rotor size or increase the cooling to the rotor. There's only so much heat they can take before looking like that. See what the C5Z does to it's rotors for reference.
For pad choices, if you're looking at Hawk, the DTC line is good, although HT-10's aren't bad. I like Carbotech too (XP10 or XP12 would be my recommendation for you). If you're not really fading the HT-10 then I don't see a reason to go higher in compound as it will just eat the rotors faster.