Re: dis-mounting orchids
I'd say, just try to keep smaller orchids near the front and taller plants in the back of course, to avoid overshadowing and clutter in the foreground. Also, try to plant sparingly and wait for a month or so just to make sure the space won't become too "busy" when factoring in plant growth.
Also, yeah, just remember to soak your orchids for a bit before removing from their mounts and stuff. Neofinetia falcata and Zootrophions that I've had were pretty tolerant of mishandling when I transplanted them, but they're pretty robust plants anyway!