Once almost all of the white hairs darken and begin to recede, don't be surprised if you see some new white hairs sprout. It doesn't happen ALL the time, but occasionally it will. If it happens in multiple places on your plant, give it a few more days. If it's just lower branches, you can harvest all of the 'ripe' colas and leave the few that still have white hairs a few more days or weeks. Nothing is carved in stone when it comes to 'how much time do I have left', the colas will tell you when their ready.
I tend to cut just the fully matured colas and leave lower, immature colas to develop a couple more weeks. Others may tend to cut the whole plant all at once. Neither is wrong, but cutting colas when they're fully mature maximizes your volume and potency. Why spend 3 - 4 months growing, then cut yourself short in the last 2 weeks?
If you want more input, post new pics around July 1st. Anything before then is probably too soon. And happy growing.
http://www.growweedeasy.com/harvest#pistil-method This may very well be some misinformation that is out there. Yes, it absolutely threw me off and I'm sorry I started an unneeded thread. I actually have a lot riding on the success (or lack thereof) of this grow so I'm being very careful, especially this late in the game. I appreciate you responding because at first I really thought you were perturbed by this thread. But thanks again for responding and shooting me straight. I would hate to think of what would have happened with these other 3 girls had I proceeded without any hesitation. Happy growing 
