I said it when I tried to list my prediction for standings but there really is a solid 9-10 teams that could make the tournament.
Indiana
Purdue
Mich
MSU
Iowa
OSU
Neb
Maryland
Minnesota
Wisconsin
Yeah, if this non con success continues then the Big Ten probably gets 8-9 bids with the number closer to the latter.
We shall see if Northwestern can get into the group you list above. It is early but one can deduce Illinois, Penn State and Rutgers won't be in the field.