There was a student recently who had similar stats and interests, and these were some schools I suggested as possibilities that will all fall well below $50k/year.
A couple other options you may want to consider that also offer scholars for Vex Robotics participants include:
And if Michigan Tech, mentioned above, appeals, it too has a robotics scholarship of $4k/year that might be able to be added on: Scholarships | Michigan Tech Admissions
You will want to double-check with the universities, but I believe that all the schools that offer a robotics scholarship will stack that with any other merit aid you receive (I recall IIT’s website saying that).
ETA: I’d also look at Western Washington (a WUE school), Stony Brook (though investigate about whether it’s shifting from being more of a suitcase school), Binghamton, and U. of Arizona as additional possibilities, particularly if you continue to be interested in linguistics. Perhaps @dfbdfb might have additional thoughts?