Try: Quality Aviation Inc 1951 Airport Rd Chamblee, GA (770) 457-6215
Aviation Atalanta did have a seminole for rent. Eppes had a seminole and archer. Both of these places are located at Dekalb Peachtree Airport Dekalb Peachtree Airport Chamblee, GA (770) 936-5437.
You might also want to check out what is available at Gwinnett Coutnty Airport in Lawrenceville, GA or Fulton County Airport 3952 Aviation Cir NW Atlanta, GA (404) 699-4200. Peachtree City Airport Authority 7 Falcon Dr Peachtree City, GA (770) 487-2225. Gwinnett County Airport-Briscoe Field 770 Airport Rd Lawrenceville, GA (770) 822-5196.
It has been a while since I was in Atlanta but these are the main local airports.