T15 CS/Finance Undergraduate Admission from a small town - any advice?

Wondering if you guys had any advice on undergraduate admission to T15 universities in their most competitive majors (CS or Finance).

I am currently a sophomore in high school in a small 10k suburb of a 100k city. Our area's employers are mostly state related or in the medical industry. Little to no private sector here.

I believe I am quite good at CS (practical CS and building things, not theoretical knowledge) and have been programming as my main pastime for 6 years. The issue is that there are no opportunities in both the private sector and in academia (university has a ban on all volunteers under 18).

Lately I have been trying to teach CS to middle school students and have also made my own novel curriculum for it but after cold emailing for 3 months it isn't going anywhere. Multiple ghosted contacts and I am not asking for any pay, this is purely volunteering.

My grades are also good, but nothing exceptional. I have a 4.0 GPA with a maximum courseload (all honors and maximum APs allowed). The average of all of my grades are about a 93%. I just don't find it fulfilling to study for exponentially longer just to be in the top 5 rank, instead I use my time either doing personal open-source projects or independent research (want to get it to ISEF).

I haven't considered leadership positions because they are all controlled by around 25 girls who never vote in anybody except those from their ranks (Student Council).

Currently I am continuing independent research so I can qualify for our state science fair and hopefully ISEF. My cold emailing for teaching my own CS curriculum just isn't working so I've decided to give up on it (2 months of emailing, ~40 unique emails with only responses to 8 who have all ghosted me or denied me due to age). I am too late for the hard-science olympiads too. We don't have a DECA or FBLA chapter but I am trying to get one started. I didn't follow through with sports or music either. Wish I did.

I feel like I am being majorly held back by my location. Plus high-income + Asian will offset the geographic affirmative action I might get. I think I will forgo CS/Finance and just do a premed from a normal state university and try to get in to a good med school. Sorry if this sounds like whining, but I don't how I stand a chance against other applicants from suburbs of larger cities. Is there anyone else in a similar situation? How did you guys fare?