I'm contemplating my next grow and I have a few ?s. I'm gonna move my grow to a smaller area(4'x4') with a slanted ceiling-something like an attic. I have a 400w Hps and I wanted to use some floros for seedling stage to cut back on heat and electric. There is an exhaust fan available. What size/wattage floro should I get? Also, how often do you have to replace HPs bulbs? I want to get some seeds from seedsdirect and I'm curious why the same strain ie. white widow is a different price depending on the breeder. Is it the exact same strain or are the cheaper ones poorer quality? I need a strain that stays short, compact high yield and super buzz. (soil) I need to know from a person who actually ordered some seeds and grew them-- what strain/breeder should I get? I got about $100 US.