wow, your girls are looking amazing. one thing i did notice though is your time line is a little off. what i usually do is asume 2-3 weeks for seedling growth, then 3-4 for veg growth and then start flowering after 5-7 weeks. If you let the plants veg for a little longer theyll end up bigger and stronger and should be ready after only 7-8 weeks of flower vs the 9 weeks your already at, plus if you wait to switch to 12/12 until your plants are showing pre-flowers it will stress the plant out less when making the transition. Your plants look great though, the smoke should turn out amazing.