The yellowish perch is from Fluckers and they are spring loaded and adjustable. I already had them from a previous setup so I just found a tub they would fit in. They are less than $9 on Amazon and have proven to be a great buy. Ive had them for years.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
As to the ETB setup Im heating that area of the room with a oil heater and then have a CHE hooked to a Herpstat for her hotspot. I put the substrate mix in the bottom and a large water bowl and everything seems to be going well with it. I also had some spare vine sections that I placed going corner to corner to give her some more things to climb and hang out on.