Those dont look done to me, close, but not ready.
I would bet you need a few more weeks on those.
When I meet a new grower who asks, is it time to begin flush/harvest,
I always say "If your unsure, give em 2 more weeks".
Generally its sound advice and works out well for them.
Flowering times are not always what you expect, and if you ever question yourself "is it time", its prob not.
Give em a few more weeks, and from that, decide when you think its time to flush and harvest.
They look REALLY good.
Kinda like this Recon pheno I used to grow.