It may depend on what the charges are. For example, some lawyers focus on DUI, other lawyers focus on violent crimes etc etc. A good place to start looking is right here on AVVO. You can search for lawyers in Newnan and/or Coweta County. You can read about their practice areas and read reviews written by former clients.
About 1/3 of my practice is in Newnan. I would be happy to discuss your case with you. I can also refer you to other attorneys who live in the Newnan area as well.
I heartily recommend Steve Frey. When I was a prosecutor, I tried cases against him and he was very good. Email him at email@example.com or call his office at 770 471 0599.