Joseph:
1) look at the Strava heatmap for the Atlanta area:
link , That'll show you where other cyclists are more comfortable riding. You might find you can string together streets that'll get you where you need to go while avoiding the heaviest and fastest Atlanta traffic. You can get all over the city itself, for instance, while staying almost entirely on residential roads. It'll be more hit or miss for you in the suburbs depending on which suburb you're in.
2) for recreational riding, at least, look at the path east from Atlanta to Stone Mountain, the Silver Comet west from Atlanta to Alabama, the belt line around Atlanta (very congested in better weather) and other places where you can ride for miles on paved paths while avoiding traffic.