From NH if you come down 91 you have two choices the safest for no or little traffic is 84 over the Newburg bridge then to 81 south, the other is 91 to 95 over the GWB early in the morning or on a W/E to 80 to 81. No tolls this way. Once on 81 there is a place called Natural Bridge that I always wanted to stop at but never did, it looked interesting. With a 28 ft MH you might want to travel on the Skyline Drive which parallels 81. On the border of VA and TN is Carter Family Fold if you like county music that is worth a stop. Farther down is Smoky Mtn NP which is definitely worth a stop. From there you can take 26 to 95 and continue on south to Fla. Jekell Island in Ga. is also worth an overnight. Stop at the welcome center there and they have all kinds of brochures as to what to see depending on your likes.