Ju Just so I am better educated, are there any rules in GA that prevent playing HS and being on a TB team?
No, the Georgia High School Association has no rules preventing participation on a travel/club team at any time. Individual schools and coaches may have their own rules, however.
Also in Georgia, the state legislature is very active in threatening the GHSA over its rules. If the GHSA had a rule curbing travel/club ball participation, I wouldn't be surprised if the legislature (stirred up by parents) didn't try to intervene.