Check out Middle Georgia College. They offer certificate type programs where you just enroll in one course. If you live close enough you could do it there. If not it may be better to go do it at a accelerated academy like ATP or AF. If you want to stay in Georgia I would suggest ATP at LZU over AF at PDK.
Crystal River Aero Group would be a great place to do your CFI but its more one on one.
For the written tests buy the preps from Sheppard Air. They are easily the best prep available for FAA exams.
Good Luck