The corresponding percentile of each scaled score varies from test to test—for example, in 2003, a scaled score of 800 in both sections of the SAT Reasoning Test corresponded to a percentile of , while a scaled score of 800 in the SAT Physics Test corresponded to the 94th percentile. The differences in what scores mean with regard to percentiles are due to the content of the exam and the caliber of students choosing to take each exam. Subject Tests are subject to intensive study (often in the form of an AP , which is relatively more difficult), and only those who know they will perform well tend to take these tests, creating a skewed distribution of scores.
You are a good student and would be competitive for those schools but I do not give opinions on someone’s chances at a particular college. Selective colleges like those you list are all looking first at the grades you have and the classes you took to get those grades. They also look at your test scores but good grades and test scores alone will not get you into a selective college. They also consider your extracurricular activities, your personal background, volunteer activities, your essays and other factors. Selective colleges are looking not only for strong students but also interesting students that will make for an interesting class. This means different things for different colleges.