Marylyn here, the "real" owner of the account LOL.
I looked at the score with your introduction explaining the special effects. If you don't mind me saying so, I hope not, I think these would be difficult to render unless your note player can do them but even so, they appear to detract from the piece. Modern or contemporary doesn't have to depend on unusual effects unless you really want them. They're probly too extreme for this experiment and would be great if the entire piece was written in a contemporary vein.
The blend would be smoother with only standard playing techniques : naturale (obviously), sul pont, sul tasto, pizz, gliss, portamento (all muted and not) and col legno and harmonics natural and otherwise.
Just a thought or two.
An ambitious piece and the tonal aspects tell that you know what you're doing!