Right on man looks like you have some space to play with over there............good layout just not sure were you are going to pull fresh air from or are you using a ac unit?? and were is all your outake air hot air going ??? do you have a bathroom near the grow room ?? just thinking if you could tap into a water line and give your self a little free standing sink in there.....are you going to do soil or hydro....i would go with the sog really nice setup just you dont think your getting much cause its such a small plant but you have tons of small plants that hopefully will get a half oz to a oz ....even you can play around since you have so much room and do a scrog to see what yeilds more for you its just adding a screen to the top of a sog well read more up on that
for the room setup i would just use the slanting cieling to your advantage at the lowest part i would hang some florecents for my clones then towards the middle of the slant i would start hanging your 600s .... you can just build a pvc frame or wood fram and hang some black tarp over it to seal off the lower part of the room from the tall part
and do you have power outlets up there i am guessing you do and if you said you had a window i would use that to your advantage hang some blinds curtins then build a box around it with a fan hooked up to the box sucking air in theres a link out there of someone who did that ill try and find it ....man i wish i and a big grow room tired of this 2x2 haha