I replied to your post on the William Mitchell specific board, but I must say that I am happy with my decision to go here. I also think that the fact that you have a family makes Mitchell an excellent choice. Flexible scheduling, other students who are parents, and the school's focus on "practical wisdom".
This link shows the activities that students (and the public) can go to at William Mitchell (and non-students too). http://www.wmitchell.edu/docket/
Maybe you could go to a talk or an activity for some more insight? Also, if you accept a scholarship from any of these schools, pay attention to the GPA you're required to keep. And then find out what the school's curve is set at. I was offered scholarships at all 3 private schools. I know several people who chose Mitchell based on their scholarship offer (even over the U). Some people thought the scholarship would be easy to keep. After exam grades came back, though, some are worried about "stepping up their game" for Spring semester in order to keep theirs. My point is that if Hamline offers you a scholarship, that is a motivating factor for studying there. However, pay attention to where students get employed after attending there, what the different starting salaries are, etc. If you are happy with that information, then attend there. But I wouldn't completely base my decision on a scholarship offer. Also, you could TRY to see (if Hamline offers you $) whether Mitchell or St. Thomas would be willing to offer you anything. Sometimes after you have an acceptance and a scholarship from another school, another school might offer you something.
Alright, I don't know if this was really that helpful. All in all, I just want to say that I am really happy with my experience at William Mitchell, and I definitely would encourage other students to attend this school.
Good luck with your decision