What I did with mine before I moved (since I was packing up to leave, I didn't want to set up something new, difficult to take down a couple weeks later) I raised a 2' x 2' x 4' cage up on a tall table, I took the door completely off, and then created a free range that extended outside of the cage several more feet. This allowed her to have the lights and misting nozzles in the cage, but still allowed her enough room to roam and feel comfortable. The free range area extended out about another 4-5 feet, I believe.
I don't know if you are capable of free ranging, but I'd take a look at the free range forum section to get some ideas. It would help your WC Meller's adjust and give them lots of space. But it might be difficult if you do not have room for two separate ones or if you have cats/dogs, etc.