You have some awesome choices first and foremost. Congrats on these achievements, it takes someone really special to have two full tuition scholarships awarded to them.
I’m a big advocate for using finances as a large factor to base a school decision on so I would take your COL into consideration. Normally I would say NYU Long Island would have a much higher COL than UTSW. However, since you’d only be attending for 3 years, it is very likely that NYU will end up cheaper or equivalent to UTSW despite the inflated cost of living in Long Island compared to Dallas.
So I’m gonna give extra points to NYU here.
Secondly, how extensive has your experience been with IM? Lots of people entering med school have this idea of a dream specialty and then the second they get to clinicals they realize they want to do something else. Granted some of this may be due to competitiveness deterring them, but it’s something to consider. If you’ve had a bunch of experience with IM, shadowing, working etc this may not be as important. But who’s to say you won’t fall deeply in love with psychiatry or something else.
I believe NYU LI is a Satellite campus so it’s name would carry the same weight as NYU Grossman, more reputable than UTSW as far as I know. Albeit both have great reputations.
I have a feeling a class of 24 would be quite close knit, so I wouldn’t be super worried about making friends. Some would argue it would actually be harder to have a good group in a larger school.
Honestly as much of a UTSW shill I am, if you’re set on IM then NYULI seems like the place to go. Better opportunities for your partner, especially if they commute to NYC, cheaper cost, more intimate teaching setting and faster training (assuming you’re 22, imagine being an attending by age 28) that would be awesome!