I would keep a close eye on what other students from your high school/district are doing. Especially if any of them are applying to Duke ED. If there are any students who are Robertson caliber then it will make things more difficult for you. Also if any students who are higher rank apply Duke ED, you’ll naturally be compared to them. So try to set yourself apart as much as possible.
Given two similar candidates, they’ll almost always go with the higher ranked student. Your ECs already look very solid, so not much to do there.
Only other consideration is to start on your essays. You’d be surprised how many rewrites it will take. If your parents can afford it, consider an admissions consultant to help “package” your story. But they can help you put together a nice narrative.