Good Luck! I'm sure at least a few will do fine, Ghost Orchids are so cool!
Edit: Ahh sorry, my bad, didn't read through, maybe the mold was caused due to lack of ventilation in the tub? I'm surprised that at least 1 didn't make it
Maybe, if you try again you could make some holes to allow a bit of ventilation? I have lost a couple orchids to mold as well and the only thing wrong with my culture was poor ventilation, Also I have heard of some people using Physan every week or so on flask seedlings to help fight off mold and disease. Wish you better luck next time!