Brachys like it dry so if you get a bigger one try and keep the substrate as dry as possible and just put a shallow water bowl in the enclosure. If you get a sling dont mist it much most slings get their water from their food. As for an enclosure general rule of thumb is 3x the Ts leg span long and 2x wide.

Sent from my SPH-L720 using Tapatalk 2