Any of them but CLT will work. Bradford, in Huntersville, is private and you can land there by permission only. Look at Lincoln County on the west side, Concord on the east side, or Monroe on the SE. Rock Hill and Gastonia are good. Oh, I almost forgot about Wilgrove and Goose Creek.
Goose Creek is narrow and has trees at the ends. While plenty long (2300') for an RV it is visually distracting.