How many could I get away with using a 150? Are 150w not good for flowering? This is my first grow and I am a lil confused. I started them out under some fluros, I am going to switch to 150w HPS when they are about 4" under 18/6 light schedule. Then I was gonna let them grow to about 1' then switch to 12/12 lighting. Does this sound like a good plan?