Several things occur to me reading your post.
One think that I am wondering about is how you manage to do so many ECs. To me this looks odd. For example:
Music takes a lot of time and is a long term commitment.
Again, a lot of time and a long term commitment.
I can understand someone doing both of these while still doing very well in high school. But there is also…
I can see that the astronomy software and the research on galaxy rotations might be the same thing. Perhaps you should combine these two.
This is just a lot to do all of. I do not know if admissions will believe all of this. Perhaps this depends upon what your references say. A few of these do seem to be connected (such as the various astronomy-related activities).
Brown meets full need for all admitted students. Your budget may be fine there, as long as the university sees your need as the same as what your family thinks. Have you or your parents run the Net Price Calculator for Brown?
Otherwise, I am wondering whether all of the schools on your list are likely to be affordable. You will need a lot of financial aid. You are not going to be able to earn enough money to help much while also being a full time university student.
Your “likely” schools aren’t likely schools. They are either low reaches or reaches. Vanderbilt is not “extremely likely”. Michigan state might be likely for admissions, but affordability is not as clear. Michigan State and the U of Miami do not meet need for international students.
I think that you will get a few acceptances on this overall list. I do not know whether or not you will get even one single affordable acceptance.
And you need to get your parents to run NPCs to see whether what these schools think that you are likely to pay corresponds to your budget.
Best wishes.