Flippancy aside, the best things you can do imo are:
1) use intense lighting. A 600W MH and a 1000W HPS can run a 4x4 area.
2) Either veg a long time to build lots of biomass that can support the large yield, or become good at cloning and grow a "sea of green" in many smaller pots. This is a great way to max not only yield but turnaround time. So far, I've only vegged trees for months, and gotten good yields from those.
For huge individual colas, you will want to grow single-stem "Christmas trees" (more and smaller ones with the height restriction ... you need to leave airspace between the cola and the lighting) andor "lollipop" them. I never cared for show colas, so i topped my plants to make for many smaller colas but a really rather good final yield of my last grow - almost 20 ounces under a 600W HPS.
Hope this helps. cn