Hey there Karys,
I play this from the Boosey & Hawkes edition which doesn't have any recommended fingering printed.
The fingering I use at the first of your 3 parts is:
4 5 5 4 5
3 3
1 1 1 1 1
I find using the 3rd finger instead of the 2nd for the first chord gives me better balance for the octave runs at speed.
I found the 1 - 3 octave combination interesting from the perspective of a purely legato upper line, but quite difficult to balance at speed, particularly with the momentum of the hand changing back again.
Trust this helps,
Ian