I think you've done a great job letting this one get strong. I like the virtual of @AlainK and @BobbyLane (maybe without the branch in the inside of the curve). The nebari is somewhat oddly shaped and would go better with the image of BobbyLane. The development of the nebari would dictate what to do with it. Try to improve it as much as you can while the tree is full power. That would be my first concern. Airlayering is an option to keep in mind if you want to make it better and enhance the low movement. I would repot, look if you are happy with the development of the base. Put it on a board or layer it in mid spring. For the cutback, i do the big cuts most often in fall or summer since sap loss is minimal at that time.