A nice kit. good luck for the four ladies.
Looks like a great grow so far mate, will be following along for the ride.
9 weeks would be my minimum boom time for the gg4. Depends on what you want from your meds. I have grown it many times and I usually let it go 10 to 11. I have some at 70 days today and they need another week to get some amber trichs and fully milk up. Yours are looking sweet by the way...keep up the good work.
Peace, negative.
respect for the detailed record. just like watching a grow video. nice work.