Honestly, I'd ditch the mister. I keep my BPs humidity in the 50s unless they're in shed, then bump to 70-75.
With a bioactive substrate I would assume maintaining humidity shouldn't be too hard. That would eliminate some of your wires and cords right there.
As mentioned above, that enclosure is WIDE OPEN. BPs thrive on security. So covering the sides and too would go a long way.
There's two major reasons a BP will refuse food.
A) husbandry, which you're working on
B) stress.
A snake won't eat if it's afraid of becoming prey itself. They'll sacrifice food in order to be lighter and better equipped to escape if need be.
And as far as your BP is concerned, your cat is a predator. Cats and snakes don't mix. Period. My cats are NEVER in my snake room or my quarantine room. Nor are they in the room when I'm handling any of my snakes.
Just kicking the cat away at night won't be enough if the cat has access to the snakes enclosure all day.