it's tough knowing exact time to harvest.
i'm using mircoscope with my cell phone and 20 pic's later i still can't tell 100%.
like you i 'm looking at pistils for brown(80-90%) and curling down(80-90%) , then i break out the microscope to start check after. i've been going 80% or more cloudy trichomes with microscope and a few brown/bronze heads, but i think thats still to early for me so i'm going to start waiting till 30-40% brown heads with microscope and see if i can tell the difference in stone.
cheers mate, keep growing fire
looks wicked enjoy your smoke
smiley day for u