Having listened to your Gaspard de la Nuit, I would suggest four pieces that should get you through the 6-12 weeks.
Ravel Concerto for Left Hand
Scriabin Two Pieces for the Left Hand Op. 9
Alkan Trois Grandes Etudes Op. 76 No. 1 "For the Left Hand"
Corigliano Etude Fantasy Etude No. 1
They are all great pieces.
Am really sorry to hear about your wrist =/ I know how much it sucks to have a hand out of commission. You should definitely check into the Alkan though. It's one of the best romantic-era pieces ever written, and if you have the determination to learn the whole set it's extremely rewarding
