Well, I started prepping the space today. I removed some of the bromeliads and threw them into a holding tub, and took out the big Princess Victoria plumeria (that was a job...I still have 4 nice cuttings that can be taken off this plant...if interested please answer my classified for a trade!)
I still probably may have to remove this calathea too, before it gets REALLY big. Anyone interested in trading for it? Its a nice one. I think its C. ornata, I'd have to look.
The space is ready to either dig the underground chamber for the pondless waterfall resevoir, or, my newest idea...to set a beautiful weathered stone basin ABOVE ground and use that as the receptacle for a scaled down version of the dropfall.