We're planning a 16 day trip to the southwest this summer. After seeing this picture I'm adding Canyonlands to the list of places to see.
If you can, try for a minimum two days in the Moab, UT area. We had barely a day there and missed so much. A week likely would only scratch the surface of the scenic beauty there.
By Staying in Moab, you are close to Arches NP, Canyonlands NP, Dead Horse Point SP, and so many other places.
If you are after a sunrise shot of Mesa Arch you will need to get there early, we lucked out in that I barely got a spot in the line up. We were there an hour before sunrise in early October, and from what I have read it is busier in the summer.