Probably the most centrally located area, that also provides excellent riding opportunities, would be the ozarks. I agree that Co, UT, MT, Wy have the best riding/scenery. But, you're talking on avg 4 days coming and 4 days going from the east coast. That's 8 days burned right there slabbing all day. I've done it. The long ride back home really sucks!
2014 DL650 (sold)