00:53:920 - 02:10:170 - I think it's better to start kiai here so the fountain burst maps to when the song really picks up. Right now you have it on the downbeat 02:09:858 - but there isn't really any emphasis onto it. Actually, in the upper diffs the note is completely ignored since 1/1 sliders are used and this is in between the slider. It's absolutely fine to have kiai's beginning on off-beats, you don't have to put them on downbeats, especially if the song doesn't really support that.
why the hitfinish everywhere? can be (and is) really annoying to play if your skin has a loud hitfinish sample and not everybody wants to use map hitsounds. i don't think this overuse is necessary at all