How much lighting

:smokin: --------------------------------------------------------------------------------

hi just starting a new grow and was woundering how much light i need for the size of the room. was thinking of useing 3 1000wts lights.the size of the room is 704 cubic feet

or
L=9'6"

w=8'2"

h=9'

was thinking of 40 plants any comments or help would realy help
thanks for takeing the time to read my fist post and hi to you all kev from uk

May get hot in there, you'd need a ton of ventilation, I'd also do more like 20-30 plants (get the feel for it), you could fit 50-60 clones there, but better to give them the room they need, 40 plants would be a full time job IMO