Is Stanford a possibility? If so, how?

I just finished my sopre year. My current total academic GPA is a 4.18, last year on the PSAT I got a 214, top 20% or so of cl (Bad, I know), so far I have 130 hours of Community Service (hopefully well over 200 by end of summer), probable club president of Mock Trial, Speech and Debate next year, possible newspaper editor, on the tennis team. Is it possible for me to get into Stanford? What would I have to get on the SAT? How much more community service do I need?