For a very serious pianist to answer?

I'm fourteen years old, and a pianist. I have been invited by Leon Fleisher to perform for him in Baltimore. This is in July. He asked that I bring a Beethoven Sonata as well as whatever other repertoire I see fit (I've performed Tchaik concerto 1 and Goldberg Variations this year, as as about three hours of other repertoire) For the Beethoven Sonata, I'm considering no. 15 in D major the Pastoral, op. 10 no. 3 no. 7 in D major, or op. 27 no. 1 no. 13. If you know these works, please give me an opinion! I played the Waldstein this year but I don't think that kind of piece is right. Thanks!!!