Moving Dendrobium tetragonum in spike

[naturalistSean]

I've had this plant for a couple of years but have been unsuccessful getting it to bloom. I moved it a south facing window in a cold cellar. This seems to have done the trick! It has developed small spikes on at least 4 pseudobulbs.

So the question is: when can I move this to the warmer living room so I can actually enjoy the flowers? Is moving it now a good idea or ought I wait a bit longer?

By the way, I believe this to be the nominate subspecies and not the commonly grown "giganteum".