She's starting to foxtail and a Sativa is telling you it's done when they do that.
Being a sativa or a heavy sativa cross. It may not amber much more....
I would be inclined to give her 3 days and see if they increase daily from when I posted this.!
Then harvest in those 3 days if it's not , for sure!
If it is increasing? Stopping at 15 or a little higher on a Sativa is good. Remember that they will continue to "mature" as the harvested plant dries!
I might also suggest you cut your N down a bit in bloom on the next run, and see how that goes. I'll bet it may come out a bit more potent as you have a lot of N going on in bloom there.
Did give the plant a real nice structure!
Nicely done sir!