Just checked out my HID's i had stowed away in the basement just waiting, seems i have 4-400w, 2-275w, 1-1000w fixtures. My space is 7 cubic feet but only gonna farm 4ft of it for now, so 4x7x7 . If i did the math right that comes out to 1050w's. My questions is, would it be better to use 3 of...