What everyone has said so far +1.
And. Have you considered towing a small car to do your exploring with? Use the motorhome as a base camp. Not having to drive the motorhome into town just to get milk, or for a day trip into the next town, will save gas. You do have to buy a small car though.
How about a skoolie? Could take the back half and give it a good boattail. Not sure what mileage you could achieve. Pretty big, but can be cheap to get into.
And speaking of boattailed skoolies and outdoor kitchens:
Only the fridge is inside. Pantry, sink, stove, and BBQ are all outside. And yes, needs more boattailing.
Big Woodie bus