Peachtree BMW CCA was one of the best organizations I've ever ran with. Driver's are very comfortable on track and not afraid to pass or be passed anywhere.
Peachstate PCA on the other hand, I was less than impressed with their event. It's their event and they can run it however they like. I would not go back to one of their events or recommend them to anyone.
First Settler's Region PCA on the other hand is an awesome organization. I assume that is who you are doing the National Instructor Clinic with at VIR? I did that in 2010 with Pete Tremper(he does all of them). It was a really good clinic.
I hope you guys have a good time. I miss RA and VIR.