You seem liken an amazing student.
you are certainly in range of academics that all schools look for from what I see! AP chem before junior year, with 5, is pretty darn impressive to me!
I think the above gives great advice. Your essay can be fantastic, you need not to have overcome some huge trail or barrier. Take time writing your activity list, and really showing them in best light. Think of something interesting/impactful, that enhances your application for the summer before senior year. Tell a good story how you will contribute to these academic, residential, communities.
Make sure you have taken (or will take) AP Calc, which I don’t see mentioned. (I am assuming your school offers calc given all the other things you have taken!). AP Stats is seen as “lesser” by AOs and with a STEM major Calc will be assumed. (Note, I went to an ivy 25+ years ago and AP calc was standard even then). Also if you don’t take in HS will be VERY hard to do in college with no background that everyone else has.
Also, top schools have lots of supplemental essays, etc, the more you apply to the more you risk doing not an amazing job on them, and lowering your chances (or distracting from courses). I might reduce list of high reaches…