on my third grow now, normally grow 4 plants using 2 125w cfls but just got another 125w cfl for another 2 plants, wondering if its worth, for flowering, just getting one 400w hps??? atm my ventilation is fine for the cfls, stays about 28 degrees, will it be alot hotter or about the same to have one 400w hps compared to 3 125w cfls?