jimlau
Shohin
I agree, let it gain some steam now for the winter and then cut it back hard next year when it starts to get going again. You'll be rewarded w plenty of back budding then with a healthy robust root system. If you had some good supplimental lights for the winter you might be able to style sooner, but no rush.
I do see some branches that could have the thicker extensions removed, it would be a fun one to trim back a bit and get away from the topiary form.
considering getting a 150watt grow light.
so what style do you believe would look better? banyan?