Don't worry much about SAT scores: you're in a range that any top school will be fine with. If it's your first time, I would recommend taking it again to try to raise it, but it seriously isn't a big concern.
Other more significant considerations for top schools:
Your transcript is the most important part of your application--far, far more important than standardized tests at top schools. You need to have taken the most challenging courses your school offers (everything honors, and whatever AP/IB courses your school offers. If it doesn't offer (m)any, find some other way to learn more: self-study or community college courses would work for this). Top schools want academically well-rounded students, not students that take "easy" courses. The courses you take are more important than your GPA, though your GPA still matters. Top schools tend to have average unweighted GPAs around 3.7-3.9. Again, students get in with lower GPAs and get rejected with 4.0s.
Letters of recommendation are very important. This is often the third most-significant part of your application after your transcript and essay.
Your extracurriculars need to show passion, not a laundry list. You need to show that you are passionate about whatever it is you're passionate about and that you actively pursue that passion. Your community involvement reflects your character and ability to give back to the community. Number doesn't matter: if you were amazing at 2 extracurriculars and did nothing else it's considerably more impressive than doing 20 extracurriculars at the average level. Leadership of course matters as well.
The essay is extremely important at any top school: most applicants have great grades, strong letters of recommendation, and substantial extracurricular and community involvement. Your essay is the most intimate view of who you are. This could easily make or break your application, and is largely what makes admissions to top schools so seemingly random and unpredictable. They're not unpredictable: many people simply write well-written, but largely unimpressive essays. You need to write well, but more importantly, you need to say something interesting. This applies most specifically to the top of the top schools that have an abundance of 4.0/2400 rejections, like Harvard.
Anyway, best of luck in this rather stressful process. Keep your hopes high and remember to find schools that aren't "elite" that you would still love to attend: there are plenty of fantastic schools out there, regardless of what US News says
Don't feel disheartened: as much as it may seem like it, no applicant to these schools is perfect. You definitely have a shot, especially if you're open-minded about what constitutes a "top school."
