Canadian source for Monnierara

[S&K Maley]

Just received this Monnierara Millenium Magic 'Witchcraft form Calvin Wong at Tropical Gardens Orchids in New Market Ontario although he is in the process of relocating to B.C.
Calvin was the only on line Canadian source we could find. He sent us pic of the plant we would receive just breaking dormancy and we got it in the mail from him in B.C here in Northern Ontario in 2 business days.
Calvin grows this in the recommended spag. and perilite but as we do not like spag. we are going to transplant it into either a medium orchiata, hydrocorn and lava rack mix or straight hydrocorn and maybe semi hydro, at least for the growing season.
Either way we plan on not filling the mix up to the new roots till they are 2" or so and then we will fill it up.
We are a little nervous about going with semi hydro due to the rot issues we have heard about this genus but if we start off by just watering, go to semi hydro when it's in full growth mode and then switch back to just watering when it's slowing down after the terminal leaf and the stopping watering for dormancy we think it should be OK.
Anyone out there who grows these have any opinions?