The light may be overkill, but otherwise it sounds absolutely amazing. I mean...more light is always good, except it may be better to have it from multiple sources (better light penetration). If I had that scenario, I'd do 2 600 watters, one MH and one HPS for the whole grow. I think that'd be amazing. Or even 2 400 watters. Mmm...makes me happy just thinking about that.