Here is the respond I got from local Subaru club
The course is long, and if the technical section is finished, then it will be very technical. Otherwise, it seemed like people were driving their cars faster on RFR then they ever had at any track, on any event. The front straight is very long.
RFR is definitely Horsepower Biased. It does have some unique elements like a highly banked hairpin, and challenging turn or 2. Having driven both, I would rather drive PIR, though a new track is always a challenge.
Technical section will not be done I am now guessing until Late July or August, maybe later. After that is done, I would prefer RFR. I drove around the graded portion of the technical section on Monday, and it should be awesome when complete. (Crosses fingers)
I was there today, ditto on the extra 2.0 miles being completed in mid to late summer. Some high horsepower cars have seen 200 mph on the front straightaway. There's talk about SCCA approval this summer as well.