There is also a little church on the left just before the driveway that you could pull into and unload, then pull the trailer up empty. Doing this or at the gas station will probably make it easiest for those trailering.
Those that pulled their trailer up last month hit it pretty hard up the paved part of the driveway and carried a lot of momentum to get up the the gravel/steep part. If you've not been on the it before, you probably won't hit it hard enough and if you don't have 4wd...it's not a place to be stuck with a loaded trailer.