Boondocking - no way, it is way to hot in May.
You would probably spend more in fuel for the generator to keep the RV comfortable than it would cost to rent a space in a full hookup campground.
I would be looking to stay at the Escapee's resort in Benson. A little higher elevation and it should be cooler. The sites are normally about 30' wide and 60' deep.
Escapees.com If you have not heard of Escpaees before, they are a club worth joining. They are a wonderful resource for camping full time, and for finding boondocking sites.
Have fun camping!
Fred.
Money can't buy happiness but somehow it's more comfortable to cry in a
Porsche or Country Coach!
If there's a WILL, I want to be in it!
I havn't been everywhere, but it's on my list.
Kangen.com Alkaline waterEscapees.com