Just a little update for anyone watching. Lots of change and continuing to experiment. The terrestrial moss started to go brown and die, I suspect due to the 99% humidity. It has however remained and prospered at the very top of the background where humidity is perhaps lower (not photographed today).
I removed the anubias, which was doing amazing, and added it into my african riverine biotope. The clash of geography with the java moss bugged me. I've just added some hygrophila polysperma as a test. Not sure how it'll do so far from the lights.. that are 2 foot above! But we'll see.
Anyway, the java moss is booming and looks lush.. nicest I've ever grown it!