Thanks for looking over my list! I appreciate your help
The "mezzanine" level will be the basking zone. We didn't think about how to hang the lights, so I'm glad you asked! For the tube light we will use command strips to attach it to the bookshelf above the enclosure. For the dual heat lamp, I've added an adjustable stand to the wish list.
Honestly I chose the succulents because they look nice lol but also because they were on the list of edibles plants from Tortoise Table, but I just ordered the seed mix you shared!
I haven't used the command strips for anything, so idk if they work (well) from above or even if they did if I would trust them. I prob wouldn't trust any adhesive since the heat of the light might affect how well they work.
You could prob use aircraft cable wrapped around the shelf supports/under the shelf to hold the tube fixture. Would also be fairly easy to make adjustable that way