Not yet, mate. Still very white pistils and definitely the trichomes are still very milky. Normally the leafs aren't the best way to check the maturity. The best thing that you must buy is a hand microscope and the trichomes tones are the unique way to check the perfect point to end the cycle. Normally if you start to flush now the trichomes will mature fastly along the flush process, but normally my rule to the start of the flush process is to have at least more than 50% of the total of the trichomes passing from yellowish to amber. That ratio is better verifiable with a handset microscope because when you see by the microscope you will find on the view a specific area that amount of trichomes (between the ones that aren't mature yet - normal crystal clear to milky colored ones; the yellowish ones and the matured ones, that are amber coloured. By your photos definitely you should wait at least more ten days. Then you should flush nor more than less than a week, suppose 5 days with crystal clear water and maintaining the PH that you use to the final flowering stage. Normally to flush properly I use tap water, but I left it for 24 hours on the sun and that way the chlorine compounds on the tap water are eluriated. Then I normally use as flush agent the T.A ( Terra Aquatics) Flash Clean (Flora Kleen) due to be a agent with a amazing cost and to be an flushing agent that doesn't attack the agents of living soil such as mycorrhizae, soil bacteriae or trichoderma and by that way you can flush the soil without altering the EC and the soil agents needed for a next time. Best of luck. TOM