I have a 12 gallon bag of fox farms ocean forest soil and I'm preparing my grow tent. Ill be getting 3 think different autos and a white widow auto freebie. I'm growing under a 400w hps cool tube. Having the 12 gallon bag I'm not sure if I want to plant all four in 3 gallon pots, or if I should plant 2 in 3 gallon pots and one in a 5 gallon. Ive grown in the 3 gallon pots and the yield was fairly small. My question is will the 5 gallon pot make a big difference in the size or is 3 gallons enough to do the trick?