Oh yeah. Good point. Definitely apply to multiple schools.
Apply to a school that doesn't require an interview (cause it's less work that way!), apply to maybe 2-3 schools where you have the best chances of getting in (i.e. check the "out-of-state acceptances":"total applicants" ratio - mind you, the ratios don't really exist and you'll have to dig that info up on your own), apply to some Europe schools (if that's your thing) - not that many people apply, and they take quite a bit of people, but you can't have ANY C's...
Edit: Apply to atleast 2 schools that you REALLY want to get in, even if they are top-notch competitive, because who knows. But I'm sure you already did that this time...