As of right now, this would be my final four:
R1- Columbia
R2- Gaither
R3- Palmetto
R4- Mia Central
If Columbia is really as good as advertised, they should find their way into the finals. I haven't seen enough of them yet to really endorse it all the way but Regions 1 and 2 are the softest of the groups. Gaither has been impressive so far but they're beatable.
Palmetto has been great so far and they look better each week. Lake Gibson is the only team in the region that can give them a contest.