It's all a matter of opinion, terpene peak is 2 weeks prior to thc peak. Your trichomes look 2-3% amber of that. So by traditional standards wait a week.
Make sure to check trichomes across the plant and don't make decision based on one part of the plant.
I like to wait until the plant no longer produces yellow stigma. Once the ratio is 90% orange there is little more growth to be had.
I still see a good ratio of yellow stigma, id do 1 more.
Bet she smells good right now though.