Trichomes

to me you can proceed with harvest. Another 2-3 days. You could also go 24h light to accelerate the process. No it won't reveg in three days. Just raise the light a bit and keep it 24 on, 2-3 days

calyxes haven't even plumped fully around the white hairs... i'd say this is too early. don't even bother scoping until the calyxes stop plumping (ripening)

wait. not enough of the pistls are dried back and brown.

Still a bit early, even for a clear sativa high. For a fully developed affect and still with a sativa clear high, wait until there are 95-98% brown pistils/hairs. This will co-incide with approx 10-15% amber trichomes, giving you the full potential of the cannabinoids as welll as remaining clear and without couchlock.

From what can be seen in the photo, they are transparent.Harvest when most trichomes are cloudy for peak THC and an uplifting high. Wait until some turn amber for a more relaxing, sedative effect. Check with a loupe or microscope on the buds. 🎅

I personally would wait

When there is at least 80% milky u can chop