Want some quick advice? From someone who took 10 years to graduate college?
Choose your college based on what you want in a college, not the proximity to the slopes (or the football or basketball team for that matter).
If you want to snowboard every day, argue with your parents and convince them that you want to take a year off before you enter college, then move near a resort and flip burgers or something for a year.
If you are snowboarding every day (at least when your school is in session) your classes will suffer.
If you have the discipline, you can go to college, take a spring break with the crowd every year, graduate in 4 years or so, then take a job near the slopes.
After a few years out of college you'll be able to afford to take a couple of snowboarding trips a year.
But there's no shame in realizing you're not ready yet and taking a year or so off and seeing the world. I wish I would have done that rather than flunking out of college because I wasn't serious yet.