Good thinking Weedx, bigger plants do not always mean more yield, more flowers do. This is how I get about 2 zips per plant in my small indoor garden: Cut clones, wait about 10 days before putting it into my veggie garden. After it's gotten about 5 nodes / 6" or in height, I cut the top growth tip. I let it veg for about 5-6 more inches, clear out the bottom couple of nodes and throw it into my tent, the 2, sometimes 3 colas stretch out another 2 feet or so and I get nice colas plus some great popcorns that all get great exposure to the light.
The reason I sometimes get 3 colas, is because my clones branches alternate off the main stem very quickly so the tops sometimes are a little crooked, a nice surprise.
It's all about the flowers.