I'm not sure there are any other good track compounds normally made for the contour caliper, most people I know run either the EBC greens, the Mintex 1144, or the KVR Carbon fiber pads. While they are a good street replacement pad, I don't know that the Bendix pads would be up to the task for heavy track use.
With the temperatures you say you are seeing, I think some decent brake ducts would help you out a heck of a lot. Just make up some simple ducts from the air dam, and route them to dump as close to the middle of the back side of the rotor as you can. They don't have to be pretty or anything. The foglight holes in the fascia would even be a good place to pull air from (of course you would have to remove the foglights, duh, lol)
