Dendrobium kingianum keikis - what to do

[astrid]

Hey all!

My den kingianum threw me two keikis that have grown rather quickly.

I am just wondering at what point I should remove them and pot them separately. Should they be a certain minimum height (example: at least half as tall as the canes)? Should they have a minimum number of roots (example: at least 5 roots or at least an inch long)? Should they have grown leaves first?

And then I wanted to ask a few more questions.
How soon will they flower? Are they technically already flowering size because they came from a mature plant?

Would you pot them in sphagnum moss, or a regular potting mix?

Thanks, everyone!