I agree, definitely onto something there. One note, Quadrax self-attenuates.

2 Hp trim may not be the attenuation you want. Something a little bit more like a 3xMIA could fit into this setup and add additional fleixbility with mixing, inverting, as well as attenuation.

You're def looking in the right directions, though, this would be a versatile setup for the money.

Also, uPlaits, uClouds, and uRings are available that take up less space, in case you wanted to sacrifice a bit of ergonomic value in exchange for HP.

Best wishes and luck!! :)

“You must have chaos within you to give birth to a dancing star.”
― Friedrich Nietzsche