Nice composition.
I think it would fit better in 6/8, or 6/4 (in most parts)
Until measurre 58 the rhythm remains constant with tuplets. Perhaps it's too much (for me, I would expect some variation).
The second part ir more erratic. I see a lot of contrary motion, which is good. This part becomes passionate....
In m. 160 it comes back to the fist part. Here it seems that the rhythm of both hands was different, not vertically parallel, which is what we heard before. I like it, too.