Thanks everyone! I’m thinking I’ll have a contractor build me a box, and perhaps have them just drill some holes for air or put a small computer fan in the back. I’m also thinking putting the printer on a heavy slide-out tray so I can make the box dimensions much smaller… I just now saw this related thread started by BillB in April 
where someone did an acrylic enclosure with a fume vent on top: Soundproofing a Form 2