I'm no expert but I do have a few grows under my belt, and IMO you should wait at least 2 more weeks before you flush. The only one that seems to be done is the OG Kush. All the other one's still have white pistils and have not receded. I've made this mistake a few times and have sacrificed weight and quality. So if you can, be patient. I'm about to start flowering 24 ladies consisting of G13-Haze, OG Kush, Cloud 9, Sour Cream, and Twilight. They are in a 8x4x8 tent, sitting in 3lbs plastic bag pots in Canna Coco. Under two Dual Cool Tubes with 4 600wHPS bulbs. I'm using Canna Coco A and B nutes. I will post pics tonight. And in about 30 days I'm gonna start another 24 plant grow of OG Kush and Bubba Kush they will be in Hydroton on two 3x3 ebb and flow tables and they will be under 2 600w and 2 400w HPS. They will be fed with Botanicare Tri-Flex. Im doin this side by side as a comparison grow since this is the first time Im using Coco. Look out for the pics. But regardless of what you decide to do keep us posted, Im very interested to know what your dry weight will be.