I would say go for it.
We took two 5000 mile trips past year. The first trip was a swing from PA west to WY, CO and NM and the second a loop around TX with a 5 day stay in Big Bend. Both trips were 21 days and while somewhat rushed we still had a great time. Our trips are more about the journey rather than the destination.
Costs, all in, were about $0.55 per mile, which included fuel, meals, groceries, admissions, camping fees, etc. Our longest day driving was about 500 miles and once west of the Mississippi the stress of driving drops way off.
Good luck,
Bill
