Most importantly, why do you think that an Ivy is the best place for you to get the best education for you? Choose your colleges based on the ones which match your personality and interests, rather than randomly choosing six or seven from the top of USANews’s list of “Best National Universities”.
You should not be asking “will these EC’s ‘get’ me into an Ivy?”. You should be asking “what is the best college for me, if I want to study this major, based on my interests, strengths, and skills, as demonstrated by my GPA, SATs, and ECs?”
Despite what people, who are deeply invested into “Prestige” (based on different ranking systems) will claim, Ivies are not really objectively better colleges for an undergraduate degree than any of hundreds of other colleges out there. There are hundreds of colleges in which you could get a world-class educations, which are not Ivy League, T-20, etc.
So, ask your self: A. What Major/s interest me? B. What environment is best for me, e.g., large research university, smaller research university, liberal arts college, etc? C. In which type of student body would I fit/feel most comfortable? C. What part of the country and surroundings do I like, e.g., SE, Urban, NW Rural, Midwest Agricultural, etc? D. What can my parents afford?
Using those parameters, put together a list of 7-10 colleges, including reaches, matches, and safeties. Reach means that fewer than 25% of kids with your stats are accepted, match means about 50% of kids with your stats are accepted, and safety means that more than 85% of kids with your stats are accepted, preferably more. Do NOT designate “Match” or “Safety” based on the percent of accepted students with similar stats, since that gives an inflated notion of your chances of acceptance.
You should feel happy with the idea of attending each and every one of those schools, including safeties. If any safety is on your list because you would only go there of you were rejected by all others, it should not be there. If the question “are there conditions in which you would choose to attend your safety even if you were accepted to reaches or matches?” is not “yes”, it should not be on your list.
Assume that you will not get into ANY of your reaches, nor to most of your matches. Every year the most popular colleges get more applications, and the chance of any applicant being accepted drops. So the difference between a match and a reach is often a 15% increase in acceptance rates. If you want to see a good example, look at the changes in acceptance rate to Colby College - the acceptance rate for class of 2018 was 28%, and for class of 2023, it was 9.5%. So what you thought was a match may have become a reach. So assume that you will be attending one of your safeties, and choose them appropriately.
Once you have that list, then you should come back here and ask whether your designations of “reach” and “match” are correct, and other such info.