This is super awesome! I do some overlanding/longer roadtrips in backcountry but have yet to gather the courage to install a solar system. Certainly bookmarking this for future reference :D
Far too many solar installers just treat a system as the entry to people coming back for more, when the problem is that they don't know enough to adjust it properly for the stuff that was installed in the first place.
[0]: https://handybobsolar.wordpress.com/
//EDIT: So, apparently, a site that's been static since 2011 and I've linked quite a lot over the years was updated again in 2020 with some ranting about Covid. You can safely ignore that, and read his older writings on solar installs, because just about everything he says about that is correct, at a "Spend five years hands on with solar and you'll eventually come to agree with him, no matter how loony he sounds about some of it when you start in."
Also, you'd be surprised how little energy you actually use out there. A quality fridge-freezer like an Engel or ARB can be run for days before it will discharge the battery in a parked truck enough to not turn the starter. This scenario pretty much never happens, so get a good battery, a good fridge, and you'll be fine.
It is an interesting feeling when you are truly bugging out or off the grid, almost a primal kind of thing, because instances where self reliance is the only thing left is becoming less and less of an occurrence. If you ever go camping in the wilderness by yourself and set in for the night alone, you probably know the feeling!
Another similarly remote place is the Arizona Strip, the portion of the state that lies north of the Grand Canyon. You access it from Utah and it's 95 miles from the outskirts of Hurricane, UT to SB Point, above the canyon.
Generally, we stay out for about a week and half and come in to town every 2-3 days, mostly for gas. We run Engel fridge/freezers, which give you essentially unlimited cold drinks and the only real limitation is space for fresh food.