hydro grow blue cheese grow anyhelp would be helpful

growing 3 barneys farm blue cheese with 2 160w cfls. when they get flowered they will be getting 600w hps in cooltube keeping temps inbetween 25-28 degree. space in flowering room is 6 foot by 3 foot with 5 foot height. i am using a dripper system with rings in a coco clay ball mix in 15 litre pots all nutes and extra water on a return system so never standing in water. getting watered 3 times a day for 2 mins a time. using dutch pro nutes as was recomended from my hydro shop. using topping supercropping and tieing down and plants are about 400mm wide with 400mm deep n 350mm high any ideas on yeilds i am bout to put them into flowering next week? anythings i can improve? please help