Those look really nice man, especially for the bud to leaf ratio. It all really depends on what you like, I see them just starting to Amber on the bottom pic which implys their ripe. Earlier harvest generally brigs forth a more energetic/less sedative opposed to waiting about a week or so and the effects of the flowers will intensify and they will fatten up a little more. Lower branches aren't going to be as ripe as the top colas so some people like to go through the plant with a scope and only pick the desired ripeness letting the underdeveloped ones finish up.
Personally I take about 25% of the plant once they are at your stage (good wake and bake)and then finish off the rest when I see a good coverage of Amber. I also used to be a strong believer in flushing your plants, discussed it on here an decided to try feeding the whole way through on my last harvest..... Never flushing again. It is all about the cure. But that's another story. Good luck man