Good advice here.

I have an Eberlestock daypack that I use hunting and like it OK.

For longer trips, backpack hunting in Wilderness Areas, I just picked up a Kelty Redcloud to replace an old Wilderness Expirience...

The units south of Tucson, along the border, hold a good concentration of Coues.
I'd be looking around Patagonia, Sierra Vista, and Nogales. I'll be down there during rifle season.