I kept two veiled's in a similar set up. I bought two fake trees from Walmart, one for each cham. I wedged a bowl in the center of the trees for feeding, then mounted a UV light between the trees on the wall. Added two basking lights, and a drip system, and voila! It worked well--but, I kept them in thier own bedroom, so there was little traffic and lots of privacy. I also had a humdifier in the room, too.
As seen on a bumper sticker--"My snake ATE your honor roll student"