We have stayed at the Tom Sawyer RV park in West Memphis, AR, several times. It floods completely every Spring so you should be good traveling during the summer.
Another place that is actually in Memphis (15 miles east of downtown) is the Agri-Center RV park. It is rather plain but it is right in the city on a large tract of farm land. We stored our coach there for 8 yrs. when in town as it's only 8 miles from the house until I found inside storage. If you decide to stay at the Agri-Center, enter from Germantown Parkway, not Walnut Grove (very low trees).
Since you are moving 'east' from there, it's not too far to I-240 that connects to the I-40 heading to Nashville. If you want, you could drive north on Germantown Parkway (6 lane divided street) and hit I-40 but there are a 8 or so traffic lights.
In Nashville, we have stayed at the Jellystone park, KOA (north) in Goodlettsville and the KOA in Lebanon, TN, slightly east of Nashville.
In Asheville, we have stayed at the KOA West but it is now not 'big rig' friendly because all of the low tree branches. In our previous coach (42 ft.) we stayed at Campfire Lodgings which is tight going up the steep road but once you are on top of the mountain, it's heaven! I don't think I would take our 45 footer there.
Lately, we have been staying at Lake Toxaway, NC, at the Mountain Falls Motorcoach Resort which is about 60 miles south of Asheville and only 20 miles to Highlands, NC. It's a beautiful part of NC and a view of the Blue Ridge Mountains.
Safe travels!
MM.
Mr.Mark
2021.5 Pleasure Way Plateau FL Class-B on the Sprinter Chassis
2018 Mini Cooper Hardtop Coupe, 2 dr., 6-speed manual
(SOLD) 2015 Prevost Liberty Coach, 45 ft, 500 hp Volvo
(SOLD) 2008 Monaco Dynasty, 42 ft, 425 hp Cummins