I’m with the other responses - but I would say to insure your place in the pack a little, I’d shoot for maybe 10 or 15 minutes earlier than 8AM if at all possible.
I had watched all of the AK Pandora reports on chat since it opened until we were there in the beginning of August, plus have continued to watch since then out of curiosity how the waits are playing out over time. It appears they have been fairly consistent since soon after we were there.
For some reason our EMH AK day had a longer wait for FoP that almost everyone else has reported since then. Still wasn’t too bad, but we opted to pass on NRJ because the wait by the time we got to it after FoP was more than we wanted to try. Our experience seems to be the exception to the rule and the NRJ wait is not that bad normally.
So, I can’t give first hand opinion on the NRJ experience, I can say that I’d bet that once you go on FoP you’d wish you had another shot at it.
With that in mind, I’d suggest you get there early as planned, RD FoP and then go to NRJ after. These days people seem to be reporting that using that technique they are on and off of both rides by 15-30 minutes after normal scheduled open. So, if you got there a bit before 8AM for a 9AM open, you can probably expect to be done with those rides by 9:15 or so. And then you’d still have your FPP to ride FoP again later - which is exactly what we did and everyone was glad for it!
I included our experience in my trip report awhile back, and it includes a map with timeline how our wait went. Again, it took us longer on our day than is reported now, but maybe some of the info in there will help you too: