Your focusing on the wrong measurement. Total watts when choosing a lamp for growspace. DLI or PPFD when choosing intensity and distance.
This is one of the most informational threads on the forum. Even just reading the first post will say more then I can on the subject.
She looks great! You gotta be happy about the inpending harvest.
You shouldnt be. Each harvest turns inexperience into experience. Im always telling people, you only harvest too early once. Or, you gotta grow to know. Alot of this “hobby” is plant listening, straight up. Your learning a whole new language, each sentence is a success 
Only if you kill her before harvest.
Each one has its own challenges.
In your next auto, try to keep these. Try tucking tye leaves and training them out of the way like this
Or my favorite way, clip the middle finger to allow the branch through but keep the big leaf.
Excellent Idea with FF soils. (OF right?) Its good idea to flush FF soils every few weeks. As the feeding schedule suggests. If using sledgehammer, follow its directions carefully. If using water, 3x the volume of the pot in ph stable water phd to 6.8 followed by an immediate feed (immediate as in same day) my plants always look great the day after a flush. It can be time consuming but worth the effort.
Ill let you know when I harvest a pretty leafed plant, its not happened yet.
You are most welcome my friend.
Last plant all kindsa happy.