A lot of people want a lot of things. You can try but don’t forget - there is no perfect school. They all have flaws. Bad profs, roomies, food, etc.
If interested in MIT, you might also look at RPI. When you say MIT and Ivies, that tells me you haven’t really defined what you want in a school vs a name you think is big.
You want to find the right school for you vs just a big name school. Have you visited any ?
You have an outstanding OOS record. Congrats. But yes, you need to lock in on math, especially for top schools. I’m less concerned with your grades and more about learning the material as math goes up quickly and you have to know it.
MIT or UMASS (not an assured admit), life can be great. You will make your success.
Just ensure you have an assure school on your list.
Best of luck.