Could I make a friendly suggestion? Consider cutting way, way back on your itinerary. To me, the magic of Utah is not the sights, exactly. It's the sound, or really the absence of it. There is so much peace and quiet out there. The stars are like nothing you have ever seen.
Take some time to just chill out in that wonderful emptiness. Take hikes to places that are not crowded. Watch sunrises, and sunsets, and moonrises. Watch a meteor shower.
I appreciate that not everyone likes a slower pace. But to me, that is the really unique aspect of the desert Southwest. It is a place to unwind and relax, and to feel unimportant and small.
