The plan and questions:
Substrate- I use dechlorinated salt water for this, correct?
100 pounds of quickrete play sand
3 bricks of eco earth
(More sand from the established tank if necessary to reach the needed depth.)
Second level for moss pit. Question - since the basket is kind of deep, do I need to wait until the moss arrives before attaching it? Or maybe use it for shells until I get moss? Maybe I need another basket now.

I saw another post someone using a small mouthed glass bottle to insert a bubbler into for humidity. This is my plan to help humidity. I plan on half burying the bottle as well. I'm assuming I'll have to watch the water level in this closely.
Water - A shoebox sized tote to set the pools into. I have a small critter keeper for one, and a largeish tupperware dish for another.
I also bought some jute rope to make climbing things with, I just need to figure out how to do that.
Anything else I am forgetting? It's been 3 years since I've gone through the initial set-up and I feel like a dunce.