yes I do know other sonatas I have done the 1st, 2nd. 3rd, 6th(not memorized yet) and 9th. In case you haven't noticed I am a prokofiev nut I think he is a friggin god and I aspire to learn every piece he has ever written, I also know the visions fugitives, half of Romeo and Juliet, and Diabolical suggestions. I have practiced a tremendous amount and will continue to eat sleep and drink prokofiev 24/7 until April 18th when I will perform these things, I also do have time to learn some Schumann, Liszt or Chopin just lemme know what you had in mind and I'll check it out. but as for right now I think i'm gonna go with the toccata as it is one of my favorites, and i think islamey would be a bit too long for an encore.
Thanks,
Dan