Audition songs for RENT?

I'm auditioning for RENT school edition tomorrow night (I really want the part of Mimi, though that is unlikely to happen) and I'm torn on what song to audition with... I was considering "Mama Who Bore Me" or "Blue Wind" from Spring Awakening? I'm a mezzo with the ability to go alto or soprano. Which song do you think would be better? I'm open to other song ideas, but they have to be fairly well-known because I only have tonight and tomorrow afternoon to practice! Thanks in advance.