I don't mean to sound harsh. I'm just trying to give a helpful answer. Your SAT score are low for your demographic, especially for Princeton and Stanford, and possibly Duke and Penn. You've done a lot outside of school, but your in-school extracurricular activities seem a bit weak. Being student council president, captain of at least one sport, or leader of a popular club would've made a difference. Obviously they wouldn't help you stand out, but I feel like they're necessary to show leadership among your peers. I understand that it's tough to do that at a large public school, but top colleges expect it.

I'm a bit surprised that you got outright rejected by GW and UNC. It could be you didn't write good essays about why you'd want to go to these schools in your supplements.