Gezus d00d. Running 12 600 watters at once ? First of all I'd go with 1000 watters. 600 watters are a tad more efficent (lumens/watt), but when it comes to intensity, you cannot beat the 1000 watt lights.

I'd be nervous as a whore in church drawing that amount of juice, but to each their own. I have no idea what you pay per kwh, but it will not be cheap running that many lights.

Deff go with seperate veg/flower rooms. Also have you an area set up with 2-4 C.F.L.'s or a T-5 4 tube 4 footer where you can root clones, get seedlings going, etc.

That way move rooted clones to veg room, start new clones, once vegged to flower, start cycle over. Beautiful setup. Never any down time. Thats exactly how I do it when I am growing.

Will take ya a few grows to get timing down, but then you OWN it. KEEP EXCELLENT DETAILED NOTES!!!!!!!!!!! They are invaluable for the next grow, and next grow, and on and on and on.

Best of luck with your grow,

b0nger