Between Crystal River and Hernando, Florida, 6 miles west of the Withlacoochee Trail
I've had several since 1999 but have settled on my beloved 2001 Litespeed Tuscany and my latest, a 2015 Cannondale Supersix EVO carbon
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.
My bikes: 2001 Litespeed Tuscany---2015 Cannondale Supersix EVO carbon