Atlanta's sprawl goes north almost to Dahlonega to Gainesville and to Athens. Get anywhere close to that area and it is a time killer, not that small towns aren't.
441 is pretty much a 4 lane highway now all the way down to Athens and beyond.
I would probably run the Parkway to 215 to64 to 281 to 107 connector to 107 to 28.
From there just network the smaller highways south, maybe pick up 17 in Lavonia. The corridor along the Savannah river basin is nice rural roads although I don't go that way often. I tend to stay in the mountains.
I wonder where that road goes?