If you like state parks, nice lake, large well shaded, paved sites then you can't go wrong with Wateree State park near Winnsboro, SC . (Also known as Wateree State Recreation Area). Just spent a few days there and plan to go back often.
The park / sites has plenty of space for large units, toads, and boats, golf carts. you name it. One guy had a HUGE fifth wheel, Truck, VW Beetle, golf cart, trailer to pull the golf cart, three (very well behaved) dogs, and more.
Two boats launch ramps, fuel, and a camp store which has both boating and camping supplies.