The new growth would make it a good time to report into a medium of your choice (that meets your needs and those of the plant, and then you don't have to worry about how old the medium might be) These do want to stay on the moist side. I would suggest small bark. It can go back into the same pot, which doesn't look very crowded. If you want to change the pot, don't go very much larger. It is better to need another repot in a year than to overpot.