why do you have so many 400s? know anyone looking for some used lights? get yoself another 1k, put a little money in your pocket and get rid of the other 400s, unless you're veggin with them.
I'd say just 4 x 1ks would be more than enough really. Get yourself some nice hoods. 4 x raptors or whatev. If you want more than that go for 5 1ks, but I dont really think you need the 400s in there. Any way you can increase the width of room to 6? then you could really fit 8 600s with...
they will cover different sized areas, however if you really think about the type of reflector, distance from top of plants, and canopy space you can make it work.
Nl x nl seeds produced by your friend are f2 generation of that strain. Not only do f2 show more variation than f1, they are the first step in interbreeding a line. They may not exhibit 'hybrid vigor' like a solid f1
couple mainline related pics of mine. first one is blue dream bag seed 8 head. second is a blueberry going for 16 heads 3rd is 4 other plants i've mainlined that are still veggin next to the end of the last flower cycle.
check out Nugbuckets Mainlining thread over in subcool old school organic. Uses 600 w hps over a 4x4x4. pulls an elbo or more a lamp (under 600s) off of 4 plants.
cfl, probably none, one of the many hundred int here will probably cause an electrical fire, not to mention 2200 watts is over the load permissible on a 15 amp circuit.
I'd top for 8 heads via nugbuckets mainlining technique, flower them a little earlier than he did, so maybe 55 days of total veg time, but still maintain a slightly shorter awesomly level canopy.