Nice looking plants man! What a difference a week makes, huh? I'm at the same point, I flipped my lights on July 4, I can't wait. I started off this weekend noticing a spider mite infestation. I freaked out thinking all was lost, but sprayed with some pyrithin and seemed to kill them.
Your plants are looking really healthy to me - wish mine looked that good. I don't see any signs of nutrient deficiency, but I have heard that some is common as the plant matures.