Cool, you're in Boston already! Yes, you can call or arrange a tour with a guide, or you can walk around by yourself, I suppose. Definitely visit and compare.
Transfer credits: Find out which school you want to transfer to, then cater to their transfer-credit policies. Transfer credits can be loopy. Good luck...
Shower sandals: Yes, you need them. Communal showering. I still got athlete's foot during sophomore year, which itched like you wouldn't believe.
Laundry bag: You need a laundry bag/bin/something to carry your clothes down to the laundry. (I guess you could use a really large shopping bag, depending on how big the loads are.) Where I went, each dorm building had laundry room on the ground floor. Something like that. So if your room's on the fifth floor...
Yes, I brought one of those fold-out, hammock chairs, too. Got a lot of use in college. Some of my dorm's desks had chairs that rocked a little, i.e. purposely made with a slightly slanted bottom. That was great.
I don't think you need a whole lot of stuff, but I'm semi-minimalist.
Micro-fridge in your room is really recommended, and my school even streamlined this process by delivering everyone's to their dorm first thing in the schoolyear if they had ordered one.
Favorite things about dorm-life: Feels like living in a hotel room, hehe. Fun setup. Walking to everywhere you need to go is great, as compared to living post-college, where I have to get in my car to get anywhere useful.
Least favorite things: Other people, basically. Showering with other people around, sleeping with other people around, eating with other people around, everything. For most of college, I had no roommates, but I was lucky in that regard.
You listed several different study-fields, and asked which one is "best." How are we to answer that for you? Are you interested in all of those fields?
School name does matter for either obtaining that first job, or building/finding connections for that internship. I feel there is not a huge, but still a significant, effect that the prestige has upon resumes. But is it worth the trade-off cost of tuition? Your financial decision...