Is there a height and width restriction where you intend to put it? If you have more space I would consider going a shade bigger. Ever heard someone say they wish they had built it smaller? Prob not. I've done all kinds of micro grows born from necessity and always seemed more a pain in the ass to find the space to equip it properly. The one I use now is 2x4x6.5 and seems to work really well. The 8 sq ft seems more than adequate floor space and the height allows the use of an HID and enough space left for a decent canopy as well as space for your eqip. Dont get me wrong, I'm a serious advocate for personal grows by any means avail to you and having a cash of nugs when you wan't it is real nice. But just imagine how you would feel if you ran into a buddy while showing off your 3oz bounty and he shows his 7 oz bounty from just a tiny bit more space. Or worse, you lose or get an oz ripped off and now you find yourself going without while you rush to rock off some more. All i'm saying is make efficient use of ALL the space available to you because you can always grow less in a bigger space but not the other way around. Just don't sacrifice avail space for "advanced/creative/original" because unless you come up with new technology and a totally unheard of thing to grow in then there is nothing "advanced, creative or original" about a cabinet grow. The main focus should be efficiency to obtain optimum quality and yield in the avail space. Be creative in the way that you hide it or original in the unique place you put it. As far as equip goes, Intense light, adequate air- intake/exhaust/ recirc, climate controler, odor control, Co2 is still the common place advancements available, that I know of anyways. Tiny enviros just makes using some of these elements very difficult if not impossible. Now if your dimensions are your avail space then belay this reply and certainly make it happen with what you have and as always- best of luck:thumbsup: PS What means did you plan on thermostic controlled heat durring lights out in such a small space if cold enough in room to worry about?