You're still too early to show sex, and 2700's are more for flowering in case that's what you're trying to do.
If you're vegging, you want the 6500's, they should work better for you.
If it is continuing to stretch, get more lights, and move them closer.
In another week or two, you can start easing into nutes if they look hungry.
Another good thing to do, is if nothing else, get a note tablet, and start writing down when you do things, like age of plant, when you start nutes and how much, in case it's too much or you want to give a larger dose the next time, when first hairs show, when first flowers show, etc.