Middle Fork Aviation charges based on the price of fuel, amongst other things. Last year we paid about $330 per flight. So it would have been $330 to get you and your buddy and your stuff into one of the strips, and then another $330 to get you out. Their planes (Cessna 206) can carry three passengers and a bunch of stuff. Give them a call for more accurate information.
We've hunted the regular season and the late season. The regular season we only hunt very high, and the late season we hunt anywhere from the river all the way to about 8000 feet. The late season is amazing as to the numbers of bucks you will see. As others have said, it is very steep everywhere you go.
We take our backpacks and usually hike many miles from the airstrips since it is usually relatively crowded there. During the early hunts we always camp at the 5000' level or higher, and during the late season we will usually camp near the river.
We always tote a shotgun or two to hunt the abundant chukars and occasional grouse. Once we even got into the geese.
The other wildlife you will see is amazing too. We always see river otters. We usually see some bighorn sheep, and we always see lots of elk. Last year we had an elk tag but only got close to cows and spikes, and of course it is a branch-antlered hunt.
During the late season we see wolf tracks occasionally, especially at the higher elevations. Definitely buy a tag if you will be out there anyway.
You can't go wrong in 27. Good luck!