I am sorry for this delayed reply to your gardening question as we are transitioning to a new Q&A system. I hope this reply is not too late to be of help.
Check out the following website which has an extensive list of groundcovers for Georgia. It will give you much more information than I can fit in this brief reply.
I don't think that Mediterranean heather will like your long hot, humid summers.
Thanks for the question. Please stop in again soon!
Q&A Library Searching Tips