Against GA's defense, a 1st down run is not likely to produce much, and could even result in a TFL. I think that we will see a pass from Mac. To who, and where? Probably a very safe outlet pass just to get the game rolling.
I'm going with Mac to Smith on the edge for about a 7 yard gain.
You did last year against good defenses, and failed on every single attempt on 1st down. You might do it again, but running on 1st down against defenses like this is a losing bet. They are ready for it.