are you aware that you can buy a real 400 watt hps system that is plug & play for 100$ & will crush cfl growing,
my choice would be none from that link,your going to be running cfl lighting which is off the shelf home depot lighting & the slowest possible lighting choice you could make,instead of waiting on shipping if i was going to use cfl i'd pick up a bunch of clamp work lights that come with the polished aluminum hoods allready on the light for 5 bucks each at home depot,then i'd install a y splitter in each socket so each hood would have 2 bulbs in each reflector & skip all the mail order cfl gear.