Advice on trichomes - - - - harvest? Afternoon all,

I am running gorilla zkittlez which has gone very well.

X4 plants X1 600w Hps.
Flood/drain system.

Currently in week 10, usually a 9 week strain.

Do these trichomes look ready to harvest as its not something I have used before to judge, 3 photos are taken from 3 different plants.

I planned on harvesting this weekend which has taken some planning, do I need to push this out another week?

I will add photos.

Another plant top

Sometimes you get foxtailing and lots of new white hairs even when the plant is ready.
This plant though has a lot of receding to go yet and a bit more bulking, I would give it a 2-3 weeks and report back