Great write-up, completely agree.
Going to add my solution, which is an off the shelf inline 4" booster fan. It’s not high pressure but it does well enough to contain the fumes, and I’m not worried about collapsing the enclosure. I got this one: https://amazon.com/gp/product/B07VQZD8YJ, and mated it with 4" dust collection piping and some fittings to adapt to the 3" enclosure port and through the wall.
I selected that one because it was the only one I found on Amazon that posted the pressure flow curve.