My setup is extremely bizarre here at Road Atlanta, because I was having so many stability issues.
Honestly, I'm kind of embarrassed to post it. If you take every front end setting and make it full stiff and take all the rear settings and make them full soft, then jack all of your other alignment settings to their extremes, you have my setup. It's ridiculous. Probably going to be horrible on tires for any length of time, and I still haven't run 3 laps in a row without spinning wildly off course.
The key here is sector 1. There is a LOT of time in the Esses, and if you can figure out the fast way through, you can knock your lap times down a lot. Turn 7 is really important, as corner speed through there will pay off at the end of the straight, and the T10a/b switchback is HUGE because of the speed carried down the front straight.
Honestly, if you can do consistent 1:19s in race trim for an extended period of time, I think you will be fine on race day. Those banzai laps on the Hotlap chart are white knuckled runs and I don't think they will be too plentiful in race trim. Just a guess...