Chances?

Hi!
I am a sophomore in high school, and I am starting to think about potential colleges. I am one of the highest achieving students in my school, but I know that doesn’t mean I can go wherever I want. I’d like to see where I fall among the top students nationally.
My freshman year I was in all honors classes and received an award at the end of the year for Humanities Scholar (top average in humanities classes), Excellence in Science, and Excellence in Spanish.
My sophomore year I am in all honors classes in addition to ECE (Early College Experience) US History (pretty much equivalent to AP) and AP Statistics. I don’t know how I stand for awards or test scores yet.
Next year I plan on taking three more APs (Lang, Psych, and CompSci), and 4-5 my senior year (Calc, Physics, Lit, Spanish, and maybe an independent study of Gov)
My GPA unweighted is 4.0, and all my final grades in all my classes are 97 or above. I do not know my class rank officially but I have been given the impression I am a likely candidate for valedictorian if I keep it up.
I also took the PSAT earlier this year and I received a 1390 (680 reading, 710 math), which was at the 99th percentile nationally.
As for extracurricular involvement, I am on my school’s quiz bowl team and in student government. I am vice president of our peer helper organization (I plan on running for president next year). I am also in an organization at my school dedicated to addressing women’s issues at home and globally. This has involved community service for an organization called Days for Girls where I help assemble menstrual kits for girls in Kenya. I will be on student government next year as well, and plan on running for Speaker of the Senate (our third highest position). I may run for student body president or VP senior year. I also attended a model congress competition this year with student government. I go to quiz bowl tournaments throughout the year and my team qualified for the national tournament this year. I will be attending a prestigious and selective girls leadership conference in New York this summer. I was recently inducted into my school’s World Language Honor Society. I attended a Spanish poetry recitation contest this year and last year, and I won second place in my level this year.
For community service, I do Days for Girls as well as church camp, and I often help out with community service opportunities at my school (I have volunteered at a few 5Ks).
I also participate in dance classes and private piano lessons. I have played the piano for over 8 years.
I plan on pursuing political science/government in college.
Is what I’m doing currently on track to get into Stanford or similar schools? What else should I be doing?
Thank you for help!