light selection

I have a room 9'x5'x7', and i was wondering if i should get a 600watt or a 1000watt, i can put ventilation in if needed. what one should i get i leaning towards the 1000watt.

For that size room get the 1000, but if you have the budget 2 600s would be better. You might even consider a 1kw with a light mover. Ventilation *will* be needed. Don't under-estimate how much heat a one thousand watt light can put out.

Go BIG or go home!!!! 1000W unless you can afford 2 x 600W