Have you thought about scrog?
actualy ya i was thinking of trying that next with all 1.5 pots, whenever i have the funds for it. im gona try 8 smaller scrog'd plants one time VS. 2 or 4 big ass mothers in 5G pots another time.

You can also look into Low Stress Training as a way to increase yield. You dont have to veg for 3 monthes and train like crazy, but just a little bend here and there will help your plant bush out.
i have used this method before and i was pretty happy with it. im actualy using this method on a plant right now as well. but the thing is im trying to save space, not make it to where i have less of it. my girls are bushy as it is with out this method.

thank you both for the input