hi all, i am setting my first grow up, i am using 4 x 400w MH for veg, and vegging for 4 weeks, then using 4 x 600w HPS for flowering, my tent is 8' x 8', i am using barneys g13 haze, and hydroponics i am using mulitflow flood and drain system, if anyone has an idea on how much i wud yield...