Definitely more of an EX chart given the beat density and usage of stacked notes which you can't do in Hard. Starting off charting with lower difficulties is cool but you're also bound to make mistakes like that without knowing the limitations of each difficulty beforehand.
You should join the Discord if you want more in-depth feedback!

Definitely hard diff, I liked it, it played well, but I think a few spins are counter intuitive (and break a rule), but I'm not a charter, so I'll leave that for the experts to help you with.