I just built a new grow room for my flowering plants, it is 4 feet wide about 4 feet deep and 7 feet tall. My question is with an ebb and flow flood and drain system how many plants should i grow in a 4x3 tray? i was gonna do twenty and try and maximize my yield, but now reading about fimming, topping, LST, and SCROG i think that is way to many plants any suggestion. (I have a 1000w HPS light). One more thing is, out of all the plant training techniques, which would be the best for my situation. i want maximum yield and very potent MJ, since it is for my roommates and i we dont want low quality product.