Nice pics but trichs are only one factor in the plant being fully mature, would be helpful if you posted a whole cola or whole plant pic as well as the trichs.
The main's typically finish last ime, they tend to throw out white hairs, sometimes forever. At one point you look at the overall plant and if it's 95%+ you can pull it. If your weather is good I'd go a few more days, if it's drinking it's growing/maturing. It's easier to tell indoor in pots, my last sign is when they slow down drinking which is easier to monitor in pots.