Looks like you've got everything covered. We noticed that the motels got very reasonable after you are out of the big cities. We were disappointed in the food however. Only one memorable meal in 2 weeks, but then we know good food and recipes and don't eat fast food. We usually ate whatever the motel offered for breakfast (coffee and roll), skipped lunch and tried to find a nice dinner. We carried plastic bottles with our favorite bulk wine loaded. When one gets into Mormon or Indian country one must be inventive.
Good luck and if you get to the Plam Springs area, contact us.
Anziani