Laelia purpurata carnea 'da sogra'

[Spider]

I think i may have mentioned it before, that I ordered a Laelia purpurata carnea. They are now sitting in my window, a var.carnea and a var. carnea (cereja I x Pink II) in very small pots. I realize I have to repott them shortly. I also got the C. intermedia var. orlata, a larger small plant and a larger sized one with a flower seath. There are smaller differances in their need for potting mixtures and I´m intending to make my own potting mixture. I have bark, all grades, cocochips, smaller sized perlite and medium sized coal, and fresh spagnum moss in the deep frez. What would be the best mixture? I´m not very good at watering my plants and keep them on the dry side. I have to ask after i have seen your wonder photos.