Two questions: suggestions for what I should do for math and junior year gpa

I have two questions in mind now, so I just figure I am gonna ask them both here:

First of all, I could have done much better than what I have now, but sadly, I conclude my junior year with two A- in fairly important ap classes (APUSH and Chem), which are all my faults for chilling too much at the beginning of the year. With these having been said, I end up with a 3.9 UW GPA and a 4.38 weighted junior year GPA. My questions is, does this legitly close many doors for me into prestigious colleges? (Given the fact that I tried really hard for my EC: ISEF finalist (though won nothing in the end), Scholastic National Silver Medal, 6 regional gold keys and more, USACO Platinum (once top 20 of U.S. in February, could not keep in the U.S. open because I had to spend a lot of time on local science fair, in which I luckily qualified for ISEF), 3Presidents at school (research, art and amnesty), will have published 4 research papers in peer-reviewed journals, RSI Alternate, Sailing Varsity, SAT 1550, 3 SAT II 800’s, 11 AP’s: 6*5’s and rest still pending so far)… Just a general idea of what range of schools should I aim at next fall for early application…

About math: I took Calc BC my first year in high school and got A+ in class and 5 on the exam, I took advanced topics in multivariable calculus and linear algebra sophomore year with a solid A, and am taking game theory and Real Analysis (dual enrollment at Stanford online high school) this year (Junior year), both of which I got A’s. I am wondering what math should I aim for next year. My goal is to keep myself chill the first semester, cuz I wanna focus on my college app and some math that is more related to CS or Statistics the second semester. Please make some recommendations for me. Thank you!

Consider discrete math (commonly taken by CS majors) and calculus-based statistics, if available.

Agree with Discrete math and calculus based stats.
As for question 1: it’s 100% fine.
But focus on your safeties. It’s really hard with your stats to find colleges with 35-40% acceptance rate, affordable, the you can see yourself at because they share some characteristics (environment, special programs, vibe…) with your ready schools.