Traveling out West from Indiana with 40' Motorhome pulling trailer w/jeep in late August.

I plan on spending a least 10 days around Teton and Yellowstone.  I’ve been trying to find the best area for a base camp for the motorhome  and then traveling the area with tow vehicle.  Decided against mt Rushmore for this trip.  Jackson a good area for that?  Motorhome & Trailer 62’.  Any good areas for jeeping?  Never been to this area so need suggestions.