By all means apply to more than one place, just so you have a back-up plan in case things didn't work out for the school you really want.
I've applied to three schools:
I'm still waiting to hear from my #1 choice
#2 accepted me--so I *know* I have somewhere to go in the Fall!
and #3 rejected me!
Funny thing is, I *thought* I was a shoo-in for #3 . . . it's the school with the least stringent entrance requirements and the largest class--so I thought it'd be no problem to get in! My point being, you just can't be sure of admissions anywhere--so it's best to have that Plan B, just in case!
Best of luck to you!