Hand span never restricts someone from playing a certain composer's music. It may be more difficult, but it can be done.
My former piano teacher's hands are smaller than mine, but he can freaking reach the chords in the intro for the Rach 2 but I can't! What the freaking heck?!?!?!
Just started piano 4 months ago and can reach 9ths pretty easily with my left hand and barely with my right (9th being one key more than octave hand). The 4 finger chords in chopin prelude op 28 n4 are example where my hand is tested. My teacher does not want me to go for those octaves yet in fear of injury. He told me to wait a few months.
Generally speaking.....How much does your reach minimally have to be to play his pieces?