Thanks @AustenNut for letting me know about this thread. MIT and CMU care more about math accomplishments than the others, as both explicitly ask for AMC scores on their applications. However, there is not enough information in the original post to determine if the scores are strong enough to influence admission. That really only matters at the level of USAMO and above.
@mistermxyzpltk, congratulations on putting together such a strong profile. I agree with others that say you should choose your EA school based upon “fit”, rather than likelihood of admission.
@tsbna44, my son is currently doing CS at Harvard, and chose that over places with “better” CS programs. He knew going in that MIT has a richer set of CS classes, but he can also cross-register there as needed, and has done so a few times.