You will need to take the upper level SSAT which I believe are considered “harder” since you will be the youngest grade taking them. A 7th grader is the oldest grade taking the mid level SSAT so you should be at an advantage.
You will need to bring your reading/verbal scores up significantly but great job on the math!
Grades and recommendations + essays will be very important for your applications but your ECs look good. Keep up the good work.
FYI you will likely need to give up figure skating unless you can find a way to continue at school which will be very complicated as a boarding student. Are you a strong competitive swimmer? Do those schools have swim teams that might want you for their teams?