Personally don't have one, just because she wont be in this tank for too long. I'm currently in the means of shopping for a boaphile, but also contemplating on making my own cage where she'll have one. So many options, but I feel the bulb will be enough for right now.
She just went into her small cave, very happy about that. New owner worries, still getting the hang of her, lol. Thank you for your help!