Which song should I play?

Chopin's Valse Brillante op. 34 no. 3 or Chopin's Valse in A-flat Major op. 42? I am a 14-year old girl with very small hands. The farthest I can reach is an octave on the piano. I really love both pieces, but they are really fast and it'd just be so much easier to play with big hands. Please answer me! Thanks!