Did you grow those, Porcha??? They are gorgeous. And you don't need to do a lot of topping; if you top once, all the flower nodes beneath where you topped will turn into colas. So if you wait until there are five sets of leaves and then top the fifth set, you will get 8 colas forming below. That would be good for the outdoor grow, because the plants will have all the space they need.
When I top, I leave two sets of leaves below with four nodes that turn into four main colas. I usually pinch off the lower leaves and stick with the nodes that are growing most vigorously and getting good light.