Also, in this piece, what do you do for that last chord? Obviously there aren't very many people who can reach that. Arpeggiating loses impact don't you think? And omitting notes is even worse. So blocking is the way to go right?
i played with several ideas there, i ended up finally deciding and going with (it is what I am practicing now for the close of the piece weeks before my performance of it),
on the beat:
LH-5,1 on the D# low octave
RH 1 on the inner voice A#
immiately after,
cross over with LH (YOU HAVE TO BE FAST ) and take the upper two notes of the treble (D#- A#) with LH 5-2
while the RH stays in position playing that upper inner voice F# with RH 5
you'll essentially hear 'two quick chords' on beat three.