How about 3 Big 10 divisions?
West - Neb, Minn, Iowa & Wisc
Central - Ill, NW, Pur, Ind & Oh St
East - Mich, Mich St, Penn St, Mary & Rut
Double round robin within division. West teams play a crossover game vs both Central & East, except Oh St & Mich who play each other. West teams would be playing 8 games while the other 2 play 9.
Each Division winner goes to to the Semis, plus a Wild Card. Winners play in title game. I'll leave the tiebreakers to someone else.
Other than a few of the West/East crossover games, all would the teams would be able to travel by bus. For those long distance games, I would propose playing on a neutral field, roughly splitting the distance.