You've done a good job. The atmosphere and musical character you have created here sound very dreamy and tranquil to my ears. I don't think Chopin was going for dreamy here. There are places where it sounds like you slow down for technical rather than musical reasons. I would love to hear you play this on a real piano. Don't simply think it needs to be louder or more aggressive, musically. Somehow there is more power to be had in the sound. Yours sounded 'nice' but lacked the musical power I feel it needs.
Gotcha, I really don't want to slam the keys in the left hand though. I've noticed that when a lot of people play the left hand for this piece, they bang it and it results in a percussive crash FOLLOWED BY finally being able to hear the actual pitch of the two tones. When I play softer though it isn't loud enough....how do I get louder volume in the bass WITHOUT having to hear that banging percussive sound about a millisecond before you can actually hear the note's pitch!