What should I do with my life?

If your main goal is to get scholarships, then you should sign up for advanced classes and work really hard at everything you do. Science and mathematics are good choices for a gifted student, but you want to have a rounded transcript (& life) so join the drama club or a local theater group, take art classes or enter your art in some shows or contests, sign up with the debate team, volunteer with a political candidate's campaign, your choices are only limited by your own ideas and desire to pursue them. Don't try to decide your career yet, it is too soon for that -- you don't even know all the options that are out there yet. I've not mentioned Buddhism because it is a private choice, not something you can or should pursue in a scholastic setting. But with that said, if you think Buddah is good, you should try Jesus Christ. Good luck to you!