Junior recital is soon! Could you help me narrow down my repertoire?

I'd say avoid the Handel cause in a recital setting it can be kind of boring. Start off with Mozart... if you're a mezzo you shouldn't be singing Deh vieni or Dove sono, the Cherubino stuff is always good. It seems like you have a lot of arias, maybe you should work on a Schumann song set, Brahms is a little heavy for a young voice. I'd say learn one more Faure like Clair de Lune and put those three in. And close the recital with some English, and an cor with a musical theater piece... I know musical theater to a clically trained singer literally sucks, but the more show tunes you learn you'll find yourself getting more gigs.