I agree that MTSU is probably the better team. But, I think they quit a few weeks ago when they lost to Monroe which took them out of the running for the Sun Belt title. FIU has won 3 out of their last 4 and road favorites in the Sun Belt haven't fared too well this year. All these factors make +7 a play for me.
As for the Akron game, I think it is either Akron +13 or sit it out for the side, mainly because I would be hesitant to lay double digits in a championship game. I really don't like either side.
I'm watching the total creep up to 54. If it gets to 55, I'll play the under. The first game was an anomaly and I think you will see the public hit the over hard when the recreational bettors get home from work and want a little action on the game. Wait until gametime and see what the total looks like.