trichomes - look plasatic and cloudy, a good sign.
pistils - still looks a little hairy and i cannot tell % of coloration. This means some plumpng is still possible in many cases. Some phenos vary i'm sure.
density - only you can tell on this one and i don't recommend doing this until the other 2 observances merit the test.
If all three things are good to go, it keeps you choosing a more consistent time to harvest relative to variances caused by genetics and differeing environments.
It doesn't look far off, but looks like it needs a little more ripening. Fwiw, i like an eariler harvest. Each to their own on that nuance. Normally more ripe = more of a couchlock / knock you out kind of buzz and ealrier will be less groggy. Just as plants vary, some ppl may not agree with that generalization. Just as some who take nyquil fall into a coma and a small percentage get hyper. sometimes a chemical will impact one body differently than another. always find your own preference and don't assume in this case.