What would you think suggesting using Anubias tied to the branches following the flow of the tank overall? In place of the moss on the branches etc?
Moss can end up looking a bit ratty, Xmas moss and fissidens are good when done well.
The other plant choices seem wise.
See if you liker the idea of anubias vs moss on the wood.
Roots will hang down and give an old aged look of a dense forest.
Do you think Bolbitus might give the tank a too dark look?
Java fern needle leaf etc might be an alternative as well for the darker corned.