Don’t know if you would get enough fin aid to bring cost to <40K, but you should look into Georgetown, because of your interest in poli sci and int’l studies. Your application could be very intriguing - all those APs with 5’s, and fluent in SIX languages? Wow.
If you’re interested in linguistics, you should add UMass Amherst to your list. You’ll probably get honors and max OOS merit money, bringing your cost to about just over 40K plus health insurance (which you probably already have through your parents’ employment).