A piece of advice...
compared to most on RIU I have always harvested a little earlier. I decided to let them go a little longer the last 2 grows to see if I was missing out on something.
There was a noticeable loss in potency. Most the advice I have taken here has been that you want some amber and mostly cloudy. I am finding that I prefer a little over half cloudy, a little less than half clear.
I did a poll on here a little while back to confirm that most prefer mostly cloudy with some amber.
This would be against the majority, but I find max potency at a slight majority of cloudy, the rest clear. No amber.
Obviously, this could be in my head. Also different ganj will seem different from person to person. So it could be just a personal preference.
When I cut my stuff down it looks just about like yours does. From a pic though, it is hard to tell. Some plants are well past brown pistils, some still have slightly more than 50% white pistils. One c99 plant i grew for a couple years actually had 90% white pistils when i took them down and it was perfect.
If it was me... I would let your media get as dry as i can without wilt... cut the lights for 24 hours or so... then chop em.