I think UGA is the best of those remaining teams... But Notre Dame will probably give us the biggest challenge. Alabama sucks this year so they are out altogether.
About UGA, though, all their offense is basically running. And if there's one thing we've done extremely well this season, it's stopping the run. If we can take away Shockley's ability to run as well as stop all their RB's, which we are likely to do, we will make their already one-dimensional offense no-dimensional.
Notre Dame on the other hand, while with a weak D like last year, can pass well and could very easily turn the game into a shootout. Our secondary is improved over last year but I think Quinn and co. should be able to throw it on us in a hurry.