Despite the fact that dead Sphagnum moss will kill many orchids when left too long in the pot, ...LIVE Sphagnum moss is a life-saver to most all species of orchids.
I found this out in 1969 and it is in fact, what has allowed P. delenatii to become one of the most plentiful species of paphs. You can buy one in flower for $20 these days.
If anyone does manage to get plants of P. ooi, either seedlings or mature, I would suggest this:
Get appropriate size WHITE pots; NOT clear ones. Wrap live, growing Sphagnum moss around the roots of the plant and press he bundle into the pot. Wrap more moss if necessary and re-pot. Firm but not too tight. Water with distilled water only and place in bright part of the greenhouse.
Clear pots will allow algae to grow which will overtake the moss; white pots will allow the moss to continue to grow and at about the time the moss has expanded, it will be time to pot to the next size up.
If you follow these instructions you will have success.