Fuel isn't too bad on the way down.
If you can, wait until you get down 85 South to the Newnan exit. There is a truck stop there (one of the bog ones, can't remember the name) that usually has decent prices.
It's like exit 41 or so. 1/4 of a tank will get you there easy.
__________________
'06 Ram 2500 CTD, SRT-6, QC, 4X4, Full Sun Coast Tranny, ATS Aurora Compounds, PPE Dual CP3's, ATS Intercooler, DDP 90's, Waterboy (3 Stage), ARP Head Studs, FASS 150, Edge Hot Juice, Smarty TNT, CFM+, BD Boost Tube, 5" Magnaflow Black Duals