Welcome to the Forum.
I don't know about winter in the Mountains of Georgia but generally most rigs are OK above freezing. Make sure you have enclosed tanks which I think you do, in either rig. Wrap up your water hose and use a heat tape on it. Put a cover inside the windshield, small cushions in fan vents and make sure skylights are insulated. We use cushions and space blankets. Single pane windows may require plastic or space blanket. I like the Winne's but it gets down to condition. Lots of propane will be needed although we use little space heaters for the most part. Good luck.
Phil & Carol & Ariel, Grey Lady
2016 Ram CTD 4X4
2009 Carriage Cameo F35SB3:dance