The wonderfulness of a puppy (in our imagination) can be shattered by the reality of potty training, having your clothes and furniture chewed, howling from a puppy left all alone for 8 hours. A young adult is a wonderful entry to the breed, and with average life spans of 14-17 years, a dog a year or two old will be with you for along time and will be a good 'teacher' for that puppy a couple of years down the road. I'm just saying'.
Gale Whitehurst is a great breeder in south-west Georgia and she sometimes has adults as well as pups. Robyn Dubbert is in north-west Ga, also has great dogs but a bit further from you.
BRAT, as said by others, is really a nationwide, internet-based rescue group. Very well organized with volunteers everywhere to foster, transport, do home visits, pull dogs from shelters. Sometimes someone is so far in the boonies that it can take awhile to arrange a visit, but usually it is not difficult. We do visits, transport, help in shelters, etc. And my most recent BRAT would be a perfect starter-basenji for anyone! He is mellow, malleable, and eager to please, easy going with other dogs, neither challenging or assertive but not timid either. But too bad, he's MINE!
My husband gets puppy-lust from time to time but I am usually able to "talk him down"!
That said, research the many good breeders and realize that this is a 15 year commitment, be sure you have a good healthy, well bred dog. It's worth a plane trip or 4 day road trip to get the right dog or puppy. It's like a mail-order bride, you don't pick the cheapest or just the closest one, you research and pick the best for you, then make the details like price and transport work out!