Call the plantations they'll all have an option for what you want. South fork or Etowah. Not sure where you are in North Ga.
Or like Greg said plant birds on the dog training areas of the wmas. They're listed in the regs. Best thing is find a field and get permission if possible. Offer to let the owner shoot and keep the birds allowing you to handle your dog.
If you are just intent on paying someone else to put birds out for you i"ll be glad to help on my lease in Washington co. I have fields and wooded areas tall weeds and pine trees and you could self guide all you wanted.