I personally saw Madisonville, and I would say they are a good pick for a "sleeper". As you mentioned, the quarterback is dynamic and will cause havoc for most defenses. They are going to be in one of those districts that could be a toss up. I certainly could see them competing more with a team such as Lorena.
My sleeper pick is the Carthage Bulldogs!
Carthage Bulldogs
2008, 2009, 2010, 2013, 2016, 2017, 2019, 2020, 2022
9 X State Football Champs
Sleeper pick .....way down south team