Feedback on Piano Piece

I recently have been working on a piano piece, can I get some feedback on the piece?

I would mainly get feedback on these but other advice is appreciated:

Form - is it noticible the ABA + coda form?

mm189 - is it clearly notated what to do?

is the rhythm diverse enough?

Thank you!

A surprising work.
The pace is a bit frenetic, although it calms down and contrasts a bit at the end.
I think the ostinato rhythm of dotted eighth notes predominates for the most part, but I do find that there is a lot of variety.
At measure 189 it is clear that this is a tonal cluster. I've never seen it noted this way before but I don't see a problem with it.

The piece runs very smoothly and the transitions are great.