What should I audition with for Logainne Schwartzandgrubenierre?

Local theatre is doing 25th Annual in October. So I was thinking I could audition with My New Philosophy or something from Hairspray or Legally Blonde the Musical. Now I'm all over the place! I need some other suggestions! I am a Mezzo-Soprano but if it's higher than that please write it anyway I can transpose...I know taboo! Thanks!