Ride the vision and rent the jeep! Lots of beautiful roads in that area. Went out there a few years ago and found a place to stay right on the colorado river. As far as time of year, do a historical weather search. It gets hot out there after the first part of june. Lots of lodging and most of it full. We didn't do any wheeling, but there were a bunch of people there with all kinds of jeeps. We did do the jet boat on the river. That was a lot of fun.