You should focus on the acceptances that you have already received. As a few examples:
Just looking at the first four schools on your list of acceptances, these are all exceptional universities. I got to visit WUSTL a number of years ago and was very impressed by the university and the students and at least the two professors who I met. One friend of a daughter went there and she was an exceptional student and a nice person. I have worked with graduates from UVA and UNC and they were very good coworkers with very successful careers. One of my good friends when I was in graduate school (master’s degree at Stanford) was a UNC graduate (he was also a strong student, a nice person, and a far better squash player than you would have expected looking at him). I also see that you are in at Rutgers with merit aid. The first three Rutgers graduates who I met were very strong students in the same master’s degree program. They made Rutgers look very good (as have other graduates who I have met more recently). Case Western is another very good university.
You are already accepted to quite a long list of very good universities.
Given your likely major in biology or a closely related field, you will be in multiple classes with premed students regardless of whether you are premed or not. Many of these classes will be academically very challenging at any of a very wide range of universities, including the many excellent universities that you have already been accepted to. Specifically which classes you find most challenging is likely to vary from one student to the next. However, the main point of your hard work and excellent results in high school is to prepare you to do well in these tough classes.
You are headed to a very good university in September based on the acceptances that you have already received. Based on your results in high school, you appear to be prepared to do well once you get to university. Whichever university you end up at, expect classes to be challenging, and please arrive on campus planning to work hard and to make a strong effort to keep well ahead in your class work. You are on track to do very well.
Best wishes.