Congratulations you will love this plant even when not in bloom. Who cannot love these big beautiful leaves.
This was my birthday present to me last June. The small leaf pictured is now 14" long and the newest leaf is now 6". It has been a growing machine this summer.
I have two others, a seedling and one with about an 8" leaf span. The middle size I mounted last year and remounted again this year. It never missed a beat so I don't think disturbing them is an issue.
Yes, you need a big mount, tree fern is best to hold some moisture, temps between 65-90. During the summer it gets watered every day and now that it is cool, if the g/h is sunny it gets watered, if dark and cloudy, every other day.
My other seedling gets my normal water routine as any other potted phal, species or hybrid.
Enjoy the progress of your new giant beauty.
Brooke