Wow, that is a beautiful orchid. I looked it up.
I am not sure that the mount will be very good long-term. That Catteya will be putting out a ton of roots soon and they get pretty big. The other problem is if you have to move it to water it, the rock can be pretty rough on the new roots. I grow most of my Cattleyas in red lava rock and have learned that from experience, unfortunately. :|
The easiest way, I found, to get a Catteya to recover was to find a place where the orchid can be left undisturbed for a few months and to stake it on top of a pot filled with red lava rock. I water the rock, not the orchid, with rain or distilled water (I have a water softener) every day for humidity. The roots would eventually begin and grow down into the medium, anchoring the orchid. By autumn, when I needed to bring the orchids inside, I could remove the stakes (pencils, chopsticks, bamboo) as the orchid no longer could wriggle in the pot.
I never used fertilizer until the roots were about two inches long as the roots are pretty tender at first and I did not want to burn them.
Cattleyas need a constant source of calcium so I usually add eggshelll to the mix to slowly decay and release calcium. It prevents problems later, as does planting the Cattleya on top of the mix.
Good luck!
---------- Post added at 12:14 PM ---------- Previous post was at 12:10 PM ----------
Concerning name changes, unless you are showing the orchid, you don't really need to change your tag. Orchid names seem to be in flux right now and I have seen some of my orchids renamed twice already. I left the original names on all my tags. If I show one of my orchids at my Orchid Society's show, my society will probably look up the right name and put in one of their tags for the show.