I've played moonlight mvt.3. It's not that difficult unless you have really small hands. It's also one of those pieces that I think you should play it fast than slow, even though it would then require a ridiculous amount of hand stamina.
I've known 2 ways of playing the movement. One is best demonstrated by Kempff's rendition, while the other is to hold the pedal down all the way, which is way easier in terms of musicality, though more straining for the right hand. Which one are you planning to do?
Wait are you talking about the first or third movement? Asking because pedalling the entirety of the third movement seems well... flat out wrong. You wouldn't be able to distinguish the staccato accompaniment in the left hand, and it would detract from the impact from the big chords at thend of the arpeggio sequence, with regards to the main subject anyway.
@ajspiano: Ideally I'd like to play it at around 176bpm because I feel that gives the arpeggios a really nice flowing feeling up to the chords, but for now I'm only really comfortable playing it at 160. Thankfully I don't have an actual performance of it coming up (I'm way too jittery for something like that), but sadly people around me like to talk about whatever it is I'm tackling, and learning something as well known as this sonata basically means I will have to play it for someone at some point or another.
I'm just really really terrible at maintaining focus and precision when I feel any semblance of scrutiny, so I'd like to be able to at least feel so comfortable in my perfomance that my jittery hands won't go completely beserk trying to keep up with such a physically intense movement.
So yeah kinda why I was wondering what I could get away with.