Hmmm.... I see some good responses here, but they all say "not now", rather than actually answering your original question, so I'll take a stab at it:

The best time to repot ANY plant is just as new root tips are emerging from the base of the plant. In sympodial plants like this, that corresponds to the emergence of new growth. That timing is important, as that allows those new roots to 'tailor" themselves to the new conditions in the pot, while the older roots, being optimal for the "old" conditions, may not do as well.