I’d choose UNC.
Paying so much money for a large public university when you have an equally prestigious and strong university in North Carolina makes no sense. If you’re really drawn to LA, see if UNC has a “study away” program that allows you to spend a semester on another campus/at another college in the US?
The odds of your seeing a classmates are virtually nil with 18,000 undergrads on campus.
Choose a living-learning community they aren’t likely to choose (wellness floor, substance free floor, Chinese House - sorry no general “Asian” community…)
http://housing.unc.edu/residence-halls/residential-learning-program
http://housing.unc.edu/residence-life/residential-learning-programs/chinese-house.html