correct me if i am wrong...but the cfls adding up would cause more heat...more problems and probably over all less efficiency...pastor420 is correct about the bulbs on 100bulbs.com...but...would you rather buy 2 of those...WHICH WILL GET THE JOB DONE...maybe not full potential yeild...but this sounds like your first grow...GO BUY 2 of those LOA lights and put them into your box....and be done with it...dont think about lights again...because in all honesty...you will drive yourself crazy thinking about lights...now...also something to put into perspective..you might not want to order over the internet..BAD IDEA for people in the states....just a suggestion...but 2 lights...that WILL get the job done..compared to about 140$ total because of S and H...and possible risk of being caught...HMMMMMMMMMM...i would and HAVE choosen the ones at lowe's....