Great idea! That’s who’s in the best position to tell you.
The Columbia/Trinity program isn’t for everyone and I’m sure you’ll get a phenomenal education at Brown. But my hunch is that an international experience like the the dual degree program is something that will stay with you all your life in a way that few others will. The caveat is IF . . . you’re up for it at 18 years old and IF you’re up for having your college years split like that.