There are million of these "which laptop for college" posts on these boards.
Here is what I have to say...all of your questions depend on what kind of college you go to...and also...what kind of student you are.
I used a laptop for the last 2 years of my undergrad...and now I use on in law school. But that is ME. My preferences.
I have friends who hate using a laptop in class and found no use for it in class. You on the other hand might find having a laptop is...