You know what to do to be honest I would start with a say 3'x1.5' SCROG (hydro!) with one plant in the back of your room and then the front half do a few more 2L's and see how you like the SCROG.. If you like it a lot which I'm sure you will, then you switch to a SCROG for your whole flower room.. IMPO I would never be caught dead with 100 plants, I like to yield high but not at the expense of 10-15 years... One plant, I've never been in trouble before I should get off pretty easy (knock on wood if that ever happens). Not to mention I'm GOING to get a real nice yield off the one plant..