Sorry bro, you're out of luck. Most people with acceptances at top-20 schools have first-author Nature papers. Strong applicants will have MacArthur Genius Grants or be full professors at top universities, and the very best will have Nobel Prizes.
On a more serious note: You're pretty good as you are; maybe get yourself some research to put the final boost on your app. You have stellar stats, good ECs, and will bring diversity to top-20 schools. Best wishes.
