You have awesome test scores and gpa right now so your main focus should be on maintaining high grades, getting some 800’s on subject tests (which I think you’ll easily do), and working on your EC’s. You still have a lot of time so get involved in something that’ll really pop out on an application such as research in a lab as a high school student. Personally, I know Hopkins loves to see that on an application as it’s a very research focused school. Keep up the good work and PM me with any questions :)!