Are you growing from seeds then? You'd be better off cutting them down to a shit loads of clones, I mean I grow 50 clones under 3 600w's so I dont know how your going to use all those 1000w lights? Unless you've got a big fuck off factory and are growing them 7 foot tall, in which case your onto a roll m8!

Those t5 lights are really good I hear, tell us more about what space etc. you got going on