Thats it! Decision made, 1000w is going to be it. I have been vegging these under the borrowed 1000w MH and I am extremely pleased with the grow so far.
If I did flower with the 750 I am sure I would be second guessing the decision for ever.
Thanks for the input and check out my journal in a couple of weeks I'll be rigging up the cool tube and 1kw lumatek hps for what I am hoping is a killer flower cycle!