Whooooa, now that’s a powerful application! I’d say you’ve hit a homerun on practically all facets of it (your EC’s are very meaningful. Commitment in a few is much more favored than quantity.)
Your chances are strong. I’d go as far as to suggest you add a few more colleges to your list(including MIT, Cornell, Caltech). Not too many though, you don’t want the lines of your essays to blur between each one of them. You’re heading to great places, good luck! 