I think next country single should be :
1. I Almost Do. It's the strongest contender. Its peak is highest than other non-singles and non-promotional singles ( #65 ). Its length is enough for radio, and it peaked at #13 at Billboard HCS. It also can neutralize 22 on pop
2. Stay Stay Stay. After ballad single, we need up-tempo single, right? And it's stable enough in Top 400 few weeks ago
3. All Too Well, because it's everyone's favorite and an outstanding song to neutralize all the bubblegum pop single
4. Treacherous, because it almost entered Top 100. She can lengthen her list as one of artists who has most songs charting inside Hot 100. Also it has demo version, why this song gets special treatment?
5. Come Back... Be Here. Because they can make ppl out there speculate if it's written for Harry

And we need to listen song from different producer, right?
6. The Moment I Knew. Because it was randomly released on iTunes
I don't see other songs has chance. Maybe Red as only country single, if Scott is an idiot