Your girls look great!
I have a question, a legit question, not being a smart ass.
I grow in the Scrog method and try to get as even a canopy as possible, I have never allowed a plant to grow naturally.
It would appear in your pics like there may be as much as 24 inches height difference between your tallest cola and the buds below it.
Do you see a difference of development with reference to the distance from the lights? Do your upper buds mature faster than your lower? Do you need to harvest the top stuff first and let the lower stuff catch up before harvesting it?
Just curious...
Thanks for sharing your grow with us,
WillieP