You can always participate in (down) in HPDE. I'm not a NASA instructor and I don't know Sebring well enough to instruct. Once I get some seat time on the track and go through NASA's version of instructor academy, I'll start instructing with them. The problem is that, in my shoes, you're advanced enough to not need an instructor skill wise, but if you don't know the course it's hard to get an instructor. Going lower in HPDE levels is usually a bad idea because I will pick it up faster than someone still worried about mirrors, shifting, smoothing things out, etc.

Hope to see you guys out sometime.