Although I haven't gone down there in ages my boss rides down there all the time. It's nearly impossible to go wrong on any road down there. The Bryce canyon and Brian head rides are awesome. How far north are you planning on coming? If you go through Moab you can cut over to Durango Colorado and do the west slope route through Leadville up to Glenwood Springs.
Cool I'll do more research, the big thing is gas stations, I put a better carbs on the bike and they work great but I lost some MPG's
I've been on that road from Cortez to Durango a couple of times and I found it rather busy even during the week days, the ride up to Silverton and beyond was real nice though.
One thought was to go to Cortez up to Telluride, Ouray, Hinsdale and over to camp somewhere around Gunnison , that's a nice ride I wish the road from Crested Butte to the Paonia dam wasn't gravel, I'm not going to put my wife through that but 133 up to Carbondale then over to Snowmass and Aspen then down through Independence Pass is very nice.