It must have been a very tough decision to turn down T14 schools. But I would dislike the location of Cornell-deep, deep into the mountain, and GUSL's reputation for its cutthroat competitiveness. I also turned down a few schools ranked above BC,,but they're not T14s. At the moment I'm weighing beween UMN and BC, I feel like your choice is making my decision easy and clear.
Most likely, see you in the fall in Newton.