Audition Repertoire: What Should I Sing?

I have been emailing back and forth with my teacher since I found out I had been granted an audition for a YAP. This particular audition isn't asking for a standard five aria audition package.

Because of the works they are doing this summer (I wrote about it here), they are specifically asking for a German aria in order to be considered for Abduction, and aria in English, and they are also suggesting (though not requiring) a work from American musical theater. Three arias in total.

Can I just say how hard it is to find a German aria for a light lyric mezzo? The Sandman aria from Hänsel und Gretel is a possibility (it's technically a lyric soprano role, but is sung by both lyric sopranos and lyric mezzos), and of course, Prince Orlofsky's aria from Die Fledermaus (I bet there will be a LOT of people doing this one), but after that, the only other aria that has been suggested to me is Nancy's aria from Martha. None of these pieces are currently in my rep, and since there are only chorus roles for mezzos in Abduction, I will probably begin learning the Sandman aria for future auditions, but not offer it for this one. I'm thinking I will sing one of the Cherubino arias to show that I can sing Mozart and not worry so much about the German part.

The next conundrum is the English aria. I have an English aria in my regular audition package ("I have dreamt" from Wuthering Heights), but I also have "Laurie's Song" in my repertoire. It might make sense to do something from the opera they are planning to do, but that aria has so much rubato that I'm not sure how I feel about doing it with a pianist I have never met or rehearsed with. I'm wondering if it's ok to do an aria from an opera you know is planned, and also whether it's advisable to an aria that complex in an audition?

Lastly, the third aria...I don't have much musical theater in my rep. However, I have been working on an aria from Trouble in Tahiti by Leonard Bernstein that comes pretty close to musical theater style. The only thing is, it's on the long side for an audition, and I'm wondering if there is a way for me to cut it? I will figure it out this week!