Replying to DSLR help: D3200 v. D5100

Hey guys, I am looking to purchase my first DSLR and have narrowed it down to these two cameras. I am a fairly expeirienced DSLR user (school course). I need to buy a Nikon because my school uses Nikon lenses and I will need to borrow them for various projects. The camera will be used for 90% photo and 10% video. I think that the D5100 will be the better camera for photo, but I am wondering about the new sensor on the D3200. My other concern about the 5100 is the lack of 60fps video. What do you guys think is the better choice? Any other recommendations in the same price range? Also, i have a quick lens question. The Tamron 17-50 gets a lot of love on here but is it much better than the kit lens for photo? Obviously it is faster, but is it much sharper for pictures? Thanks in advance, and please excuse any spelling errors, I'm on mobile.