I could not access the websites you posted, my computer will not allow it because their internet certificates have expired. I do not know what limelight river wattle is, so can't speak to it.
One thing I will comment on.....'Elephant ears' and not epiphytic. And lauterbachiana is way too large growing unless you make a pocket for it and reinforce it in some way.
Philodendron Birkin likewise is not an epiphytic variety of Philo, its a terrestrial.
Staghorns, Monstera, ferns, if you have access to anything like Anthurium vittariifolium, other climbing/vining Philodendrons, etc would be nice. If you have the correct climate, shingling aroids like Rhaphidophoras, Marcgravias would be nice.
I am actually about to use synthetic felt for the first time in my own greenhouse to test it out.
