You need to think about it from the college admin point of view. What do you have that they need? Maybe they need someone from your state or maybe they need a few writers for the school newspaper. Then you just need to stand out in that pool of kids and with your great grades and scores you probably will.
You should also know that the elite school supplemental essays are very long. So if you can’t reduce your list of schools then plan on spending at least two entire days (like 20 hours) on each elite application supplement.