We are renting an RV in Phoenix for 9 days at the end of August. Our current itinerary is as follows: Sedona (1 night) Grand Canyon-South Rim (2 nights) Bryce Canyon (2 nights) Zion (2 nights) ...
I would stay in Cottonwood at Dead Horse ranch State Park and visit Jerome,Tuzigoot and Ft Verde.Grand Canyon stay in 10X or Mather if you want some wilderness or Trailer Village for hookups.