Pinkie, I think it's great that your problem is being TOO smart for your classes, rather than the other way around. If you're already in the most advanced classes you can take, you might consider talking to your guidance counselor or your parents about whether you could do some sort of dual enrollment in some local college classes. Or take even harder classes next year. Probably not this school year, though, and I'd say just try to pay enough attention that you don't let your grades slip.
As far as college, it sounds to me like you would be bored at a school that isn't academically challenging. Other than that, only you can tell how far away you want to be. But college really is a chance to expand your horizons and try new things.