Johnny...I was in your town today....Beautiful place. Great park along the river.
As for your fume hood, can you vent it outside by other means? (make a window plug or???) You can always use a small BI fan or furnace blower to vent out the fumes of your shop. I don't want to cut holes in my wall either. I'm getting my roof re-shingled and having extra roof vents installed. I'm planning on using one of the vents as my exhaust outlet. The big drawback is losing all the heat in the winter.