Here is my idea for a set up. 4-55 watt fluorescent tubes. The only ballasts I can find for the 55 are ones that have a hookup in the middle, in which 2 55's can be inserted.
In addition to the 2 ballasts, 4 55-watts, i could hang 2-25w cfl over each plant.
So, each plant would be getting 160 watts each. Is that enough?
Attached a picture.