Just Vegging Out

Hey all! Just thought i would post some pics of my first attempt.
Been reading this forum lots and getting great info from ya all.
Bought these seeds online, suppose to be NL/Bigbud...i couldn't tell if my life depended on it..lol! So anyhow, i got a 1000w MH off a friend and started the 10 seeds from scratch in peat pucks, planted them, and so far they are growing! They are on there 4th week under lights. Yes the light probably is too big for the grow room i've built in my garden shed, 4x4x7, but thats what i got for now, any help on managing them in a small room would be great! Also wondering if i should start flowering now? they are about 12-14" now.
and by the way, if it wasn't for this site i wouldn't have gotten this far haha! I hope the pics turn out, not suppose to be operating heavy machinery right now haha!