Allllright.... Interesting. As far as I remember from College, and from my years as a trumpeter prior to that, "scherzo" is usually defined as a piece with a light, playful, yet vigorous style.
My interpretation of that doesn't quite arrive at the conclusion that it should be difficult to perform, or rather, in this case, appearing near impossible, or, that the notes are randomly chosen.
No intent to insult you at all, I'm simply explaining my perception of this piece, coming from an educated and experienced point of view. I'd urge you to continue writing, but to truly step back and analyze what you've written before you finalize it. Compare it to other works as well, in terms of it's overall form and structure, as well as the shapes of your phrases within the music. I'm sure you'll come to find that there are things that you did not realize before, and that could be altered to create a piece of music that you can truly be overjoyed at!
Thanks for sharing 🙂