I suspect 18 will probably linger around awhile. They're SECSECSEC after all so the voters cut them some slack.
And their only games before us are against Furman, Georgia Tech, and Kennesaw State, so I imagine they'll be closer to 14 or 15 by the time we meet up. Heck, depending on how badly we lose to the Buckeyes, they could be ranked ahead of us.