Hi Jim,
Welcome to the Heartland Owners Forum and family. We have a great bunch of people here with lots of information and all willing to share their knowledge if needed.
The Davis Mountains in July will be pretty hot, so you will need your A/C. You would need at least a 3000watt generator to power your a/c and anything else you need.
I did start a thread for you, the one you posted to was pretty old... besides your a new member,,, Welcome aboard.
Enjoy the forum and your Edge.
Jim M
(Ever notice how many good guys are named Jim???)