Well if you're dealing drugs while firing shots at students and carrying a variety of guns, and taking their lunch money then you're going to be prosecuted under the GFSZA
if you're following the law of GA you'll be fine.
if you feel uncomfortable then get a CPL.
I'm not aware of one case, not one, of a prosecution for the GFSZA of someone merely carrying a gun while obeying all state laws. not one. every person who's been charged by the feds that I'm aware of was either dealing drugs or a gang member or assaulting students.