My beloved 2001 Litespeed Tuscany and my 2014 Cannondale SuperSix EVO Hi-Mod Team bike
You'll find lots of Atl folks here. Stop by the Atlanta/Decatur thread and introduce yourself.
And if no one can offer a back roads route, ask the folks at the Atlanta Bicycle Coalition for assistance. --> www.atlantabike.org. They have bike maps, bike buddies (to ride with you until you feel comfortable with your route), bike classes, etc.