Hello!
I just recently learned this sonata for a recital I'm giving in the spring. No matter what you do, you need to maintain the rhythm and intensity. Even though I say this, don't be afraid to use a little bit of rubato to give the music breathing room. Also, the jumps in this piece are pretty gnarly. Just used dotted 8th/16th practice to really teach your muscles how to perform them. Now, it's a difficult piece, but it's not a hard piece to learn. I learned the 1st movement in about a week and a half. Have fun!
Donald