In addition to all of your ECs, what you have going for you is rigor. Many top colleges value this as highly as gpa.
I’m not sure why you are so focused on the most competitive schools. The fact that they are hard to get into doesn’t mean that the quality of the education is any better.
A hidden gem that I think would be a great fit for you is University of Rochester. It is a very academic environment and has excellent resources and top faculty. It’s PhD programs are also very strong.
Another similar school which is also worth a look is Case Western Reserve University in Cleveland. Like Rochester, they have strong programs in Statistics and Data Science.