Your are definitely going to need more lights with that many plants to get a decent yield. I'm currently using 125w of CFL light per plant and getting around 2oz a plant (I am still tweaking my setup and think I should be able to get it to 3 per plant). You might also want to look into LST,SCROG or SOG as these methods of growing suit CFL's. Your grow will take a bit more time to maintain if you use these methods though.