Planning on auditioning to some undergraduate colleges/conservatories in the US in about 2 years time. Most of them require a Bach, a classical sonata, a substantial romantic work, a modern piece, and an etude. Please comment! Especially for the 20th century one!
Bach p/f book 1 no. 17 in Ab (I'm pretty confident with this one)
Classical Sonata: either Beethoven sonata op. 31 no. 2 (tempest) or Mozart sonata K332. I'm leaning more towards the Beethoven on this one...
Romantic: Chopin Rondo op. 16 (almost done with it)
Etude: Scriabin op. 8 no. 12 (learned a year ago but needs polishing)
Modern: not sure... unless Ravel counts so then I can play Miroirs (I'm halfway done learning it). I'm looking at Ginastera Sonata 1 and Liebermann Gargoyles just in case... suggestions please!

I have quite a bit of time so if you want to recommend some other pieces, difficulty and length doesn't matter a whole lot...
and please don't recommend something that's been played a million times before the jury.
