Campgrounds Atlanta/Decatur, GA

[DonP]

We will be taking an extended trip in May. Mt. Rushmore, Omaha, Indiana, Nashville and Georgia. We're staying at a KOA at Rushmore and Nashville, friends in Omaha and Indiana. I'm trying to find a nice full hookup campground close to Decatur, GA. The closest KOA is almost 2 hours away. We're visiting our daughter in Decatur so I'd like not to waste 4 hours a day driving back and forth. She lives in an apartment so we can't mooch like we are in Indiana.

Thanks in advance for your suggestions.