Disagree this is a "must win" for Gallatin. In my opinion, this game determines 2nd vs 3rd place in the region. Nothing more, nothing less. It's a "must-win" if Gallatin wants a home playoff game, but otherwise, I don't think there's much difference between a 3-6, 4-5, or 5-4 season. All three suck.
As for the actual game result, I think Beech wins relatively easily. I know Beech is down this year, but Gallatin is simply bad. Beating a bad Cookeville team and a bad Rossview team in their last two games doesn't change that fact.
I predict Gallatin finishes the season by losing to Beech, losing to Lebanon, and beating Clarksville. They'll be 4-5 and finish in 3rd place in the region. In the first round of the playoffs, they will travel to the winner of the 10/29 Smyrna/Overton game. Gallatin will likely lose that first round game...but even if they win, they'll get rewarded with another butt whippin' at the hands of the Commandos in the second round. Just my two cents.
But hey...you never know what'll happen until they play the games! High school kids are more prone than your average athlete to over or under performing any given Friday.