We did it last year in sept. at min flow. One of the biggest bitches honestly was the put-in, (to be fair it was compounded by the rain), the rest of the time was a blast. Hang ups on rocks will be your only concern simply because you will likely have a heavy boat and will be less maneuverable. Some spots it really helped to have two on the front with paddles to help bust a move. I'd do it again....
The entrance to Triplett will probably be more of a challenge than the rapid itself. And having run it a bunch at similar levels I can say that 836 cfs is better than 812 cfs but not nearly as good as 852 cfs.
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse
We did it this April at around 850 cfs and it was good to go for almost everything. I had a SHITLOAD of beer in a 16 foot Aire. The only time I got hung up was in lower disaster - there were rocks everywhere and not really a line to pick. It wasn't really a big deal though, came off in about a minute and kept on. Hell's was the most fun, though Triplet (while super easy and slow) was also pretty fun just to maneuver around.
Should be awesome right now since it will be a bit warmer than in April. Have fun!
Oh yea - agreed about the put in. We ended up backing our truck and trailer up past the boat ramp all the way to river's edge on a sandbar (luckily it was strong enough we didn't sink). If you can't back down to the river expect a shitty gear haul.