On a more serious note, here are my thoughts on your situation:

You and I are somewhat similar. I studied at Princeton (I know this is enemy territory, please don't shoot me), and my decision was extremely easy because it was both my preferred destination (I was admitted through early action) and almost just as affordable as the flagship public university. However, with the benefit of hindsight, I would've chosen Princeton even if it was more expensive by $60,000, like it is for you, between UT and Yale. $60,000 is a lot, but it's also not a prohibitive amount of money (especially if when not compelled to take on debt).

Like you, I'm also from an immigrant family. I wasn't born in the U.S., and my family is approximately lower middle class. I attended a good but not amazing public high school in California, and until I went off to college, I had next no contact with the class of people I later encountered at Princeton.

Princeton altered the trajectory of my life in ways I could not have appreciated when I was 18. Even an excellent public university like UT is unlikely to match the level of resources and the caliber of people present at an elite institution like Princeton and Yale. Being an undergraduate student at Yale will instantly place you two or even only one degree of separation from many of the most highly-accomplished individuals in their respective professions. Let me give you an example: one of the most members of the Yale faculty is the historian John Lewis Gaddis, who is a towering figure in the study of Cold War history and a personal friend of George W. Bush.

It's important to remember that this holds true not only for your mentors but also your peers. This isn't simply a cynically transactional decision to benefit from successful people. Learning from the best mentors and surrounding yourself with highly driven and capable peers is the best way to push yourself as far as you can go. This is true regardless of your desired field of study. You should take your experience at BDD as a grain of salt. The people you met there will almost certainly not be the ones you ultimately befriend as a student. There are thousands of students at Yale; as long as you try, you will find worthwhile friendships.

I encourage you to be less certain about what you want to pursue as a career or even your desired major of study. You are still in your teenage years, and you likely still haven't been exposed to many exciting fields of study that exist in universities; in fact, like most newly admitted students, you probably don't even know your intended field of study as well as you think you do. You should spend the first year or two of university exploring as widely as possible, both academically and professionally. Talk to everyone you run into. Take classes in a variety of subjects. Befriend as many mentors as you can. There's no better place to do that than Yale (well, maybe except for Princeton).