For the romantic work, I would suggest doing something "bigger", simply because colleges like seeing big romantic works like ballades, scherzos, and what not. The hard liszt etudes and the very hardest chopin ones would be acceptable because you already have a somewhat massive piece on you program in the Appasionata. If you were to a Ballade, it would, to me at least, be a scary program considering you have the Appasionata. Nevertheless, it would be very impressive. As for the Bach, I think having Bach is a good idea, but I'm not sure of doing a suite other than the French ones because the English suites and partitas are all about 20 minutes which would make your program very long, perhaps too long. For a contemporary piece, I think that Prokofiev sonata 3, being only one movement, would be good.