They are tough plants. I think you'd be fine to repot it now, but probably would be better to wait until early spring. Mine gets pretty ratty during the winter. For one, they don't particularly like to be moved a lot from indoors to outdoors and the reverse. For another, they can be really difficult to remove from a pot where they've grown for a while and I have done severe damage to the root systems during that process. That, combined with winter storage with cool temps and lower light before the root system recovers might cause some damage now that wouldn't happen in the spring. Are you confident you can remove it from its container without a lot of mangling to the roots? I cut out a lot of straggly growth in the spring and more of the old as new growth shows up. If it looks straggly now, you can probably cure that with some water and fertilize. It's one of rare potted plants that really responds to some fertilize. In the growing season it also responds to and uses a lot of water. Not many days that I don't give it a soaking here and it's really looking great right now.
