Thanks for all the suggestion. Last time I drove it took me 5:20 door-to-door without any delay on I-75. I did get lucky as I was following a car which was speeding and got caught by the GA police.

Flights will take me 3:30 theoretically if I calculate correctly (1 hour to ATL, 40 min at airport, 1:20 flight, 20 min from GNV to my apt). So it will save me 2 hour each way with an additional expense of $450 (ticket plus rental car at ATL and parking at GNV). I haven't flown yet but I will try to see whether it will actually save me time and energy.