Bravo! Your technique looks quite good to me, and a great deal of hard stuff is sounding easy!
I too would love to see you play this on a real piano.
IMO, since the tempo marking is Allegretto, I think your speed is just right-it definitely doesn't need to go faster. Perhaps it could find a tiny bit more flexibility in this tempo? Many people did marvel at Liszt's ability to keep absolute time, so it certainly works the way you do it.
Very high-level rendition, thanks!