Coelogyne culture. Potting media? Basket?

[DirtyCoconuts]

I have two of these guys and I fear I live in too hot an area but I am also a bit confused about their culture. People seem to say pot them in sphagnum but I don’t like that and try to avoid it if possible. I also thought that if I went with either my open mix with a lot of lava rock, perlite and leca or semi hydro to allow for more evaporation and this cooler roots.

First, am I going to kill these plants in my neighborhood?

Second, will I be doing them a disservice by having them out of sphagnum

Third. Anyone in a similar zone growing these with any success?