second grow

ve read buds for less, i know about lumens and about how to grow with cfls, i just want some suggestions. Right now im about 6 days into veg in a 2.5 by 2.5 and 4ft tall grow box, my plants are looking good i have 8 x 26 watt 65k cfls, my plants are at a rapid growth. lights are on 24/7 but in 8 days im switching my plants to 18/6. i plan on replacing my 8 65k's with 9x 26 watt 27k and 2 65watt 27k for a total of 4500 lumens a square foot for flowering. Im going to keep my lights about 3 inches away threw out the rest of my whole veg and flower. My box has an intake fan and a outtake vent and my box stays about 75 to 80 degrees. Im only going to use nutes for my flowering stage cuz im only gonna let my plants veg for 5 weeks, the flowering nutes im going to use is all fox farms beasties blooms, open sesame and cha ching, the soil im using is happy frog and right now my plants are in pong cups but will be switing to 1 gallon buckets before flowering. Im just wondering what u think my potential yield could be and if theres any suggestions to make things better im open ears because im trying to get great results