Someone had recommended I take US27 to avoid Atlanta. Best I can see, that looks like a tough route. Atlanta is a B*, but I now have a much higher hatred of Cincy. Didn't help I got a late start ...
I think the fear of Atlanta is overrated (assuming you don't try to go thru at rush hour).
But if it concerns you that much, consider swinging slightly east thru Columbus then I-77 to I-95. The Ohio portion isn't interstate but pretty open and you can make good speed. It's only like 7 miles longer.
US-27...fine if you are in no hurry and just want to get away form the interstates but I don't see it being a better option to Point A to Point B.