m0useanswered grow question a year ago I see mostly cloudy trichomes and a good amount of pistil dry back. I would say if you wanted to wait a week it might amber up a bit. Other wise its prime and ready.
There is a lot of misinformation aorund the practice of flushing. It is a tool that is good to use to correct a issue in the medium to avoid a catastrophic problem.
The act of flushing in the hopes the plants will be rid of excess nutrients is just not true. The plants do not store excess nutrients in the buds, they do this in big fan leaves and stalks and in the roots. Pouring tons of water will not wash them out, it will just stress the plant out and starve it, flushing agents are just chemicals designed to lockout nutrients that are available they don't do anything else despite some of their marketing. Companies will say anything to sell a product and little to no regulation prevents oversight on BS marketing.
If you wanted to do just do water last week of life it would be better and cheaper then flushing and using flushing agents.
Good Luck!