I would take some SAT Subject tests-maybe math, science and literature or history?
+1 on SAT II - Take Math 2 + one more (chem/physics for science/engineering). Go to cappex or naviance and look at your chances, at least that is data driven - probably 20-40% per school for the Ivies (RD/ED) 40-60% for Hopkins and Duke, 60-80% per school for the others. You’ll get into a few of them.
@TooOld4School I’m honestly not sure whether to take SAT II’s because I’ve had practice tests and my scores have been in the mid 650’s and I’m honestly unsure about how I would perform on them. Would not taking the SAT II hurt my case significantly at these schools?