new set up only restriction being space, any suggestions?

after gaining my first 10 grows to tuck under ma belt i've decided up grade every thing i have enough money to fund the new grow but im limited to space i only have 3x6ft free with this in mind im after some suggestions about tents lights filters reflectors etc. i have however decided to make the most of the space i do have and i'm going to adopt the either scrog or sog again any suggestions as to which one to go for would be greatly appreciated

Peace

hmm Im thinking two 400W MH/HPS would cover it all, maybe in a SoG with 3x6 plant`s or a Scrog with maybe 2-4 plants

and I would for sure suggest to fit some cool tube`s or even better hoods on em so you can keep em really close and heat wont become to much of a problem in the small space, I think a nice 8" ventilation would both cool them lights and exchanges the air/co2 in there, run it on one line with a filter on the end in flowering/when they stink, or maybe a 6" for the cool tube/hoods and another 6" for air/co2

run one 400W MH fist week or two wile they are small seedlings, then add the other untill two weeks in to flowering, then changes them to HPS

just how I might do it in that space ..-