mmm, im not sure but I think youl need a bigger pot for those, Iv got a 4 Gallon pot for 1 plant at the mo- prob a bit big for 1 plant but im guessing 5 Gallon is a bit small for 6 plants. Not sure how easy it would be to transplant them, since the roots might be twisted together etc. I also think that 11/13 cycle means you get less buds but quicker, so if your plants are already small you might want to go with 12/12 to get more out of them.