How many beautys under a 250w?

I Have a 250W System with both a MH and HPS Bulb. space is not a issue but i'd prefer to do it in the closet. How many 3-4 Ft Plants (Pure Sative) can i fit under a 250w system. I've read on many dif ways to harvest every two weeks, so i want to try and aim for 2-4 OZ. Is that even possible with a 250w system and 3-4 foot plants?. Also what size contaner will be good for the entire life of a 3-4 foot sative plant with out root bound occuring.

You got a 2 1/2 foot by 2 1/2 foot growing area.
With that light.
I wouldn't grow your plants bigger then 2 feet.
So you could fit like 4-5 maybe.