How important is auditioning with a unique monolouge?

Hi all! I am a senior in college at a small university without a large theater presence. I'm auditioning for my school's spring musical (just for fun, I'm not a theater major of any kind) and was told to prepare a contemporary monologue. I've learned Sally's "coat hanger sculpture" monologue from Charlie Brown, but just realized (upon critical thinking and some googling) that this is an extremely overdone monologue.

The audition is on Saturday and I'm upset that I've spent time learning these lines and am not sure I'll have the time to re-learn a new one. Because this isn't necessarily a high-stakes audition, do you think my doing an overdone monologue will severely impact my chances? Or will it be a mere annoyance? Should I drop this one and try to re-learn a new one?

Sorry if these kinds of posts are not allowed, I will delete if needed!

The overdone monologue/song worry is…overdone. As long as it’s not the equivalent of “To be or not to be” or “Defying Gravity,” if you do it really well, any director or casting director who knows what they are doing won’t care how many times they’ve heard it before. Just use the Charlie Brown speech if you feel you feel it shows you off well.

This is a college musical audition. The odds that someone else does this monologue is pretty rare. When it’s a cattle call with 600 actors, I think then you can kinda safely assume a few others will be doing it as well.