The teams North Georgia has played and beat are other home school teams, impossible to tell how good they are by watching them play against that type of competition. I'd be pleasantly surprised if they're on a level similar to what Q Foundation was. Q appears to be somewhat solid this season, only lost by 3 TD's to defending state champion East Lincoln. Q never lacks talent, just horribly coached and low in numbers.
As far as Gilmer goes, they aren't what they were last year by a long shot. So far this season they've beat Fannin County by 3 and lost to Dawson County by 15. If Fannin County can give them a game and Dawson County can beat them this season and Murphy can't, I'd be very concerned as a 'Dogs fan.