Come to the admitted students day, meet with other students, get a feel for the community, speak with Dr Anatolios, and keep in mind that the BTI has a lot to offer as far as courses and practical work relating to your research interests. And a degree from Boston College's School of Theology and Ministry is only going to appreciate in value, I can guarantee you that.
Honestly, speaking as a current BC STM student, I love it here, have never felt stifled in my research or theology, and wish I didn't have to leave this amazing community! But sometimes there are offers you can't refuse
Best of luck to you in your discernment and at the STM's admitted students day!