^I'm going to Turner Motorsport in Amesbury, MA for my install next month. I'm driving almost 2 hours out of my way, all the shops here have never done a F10 and are trying to charge $700+ for install!
I'd definitely look into them since you are decently close, and while you wait check out some of their E92 GT cars.
Edit: Maybe if we go together we'll get a decent deal? PM me if you guys would like.
-Amar