Wait for most the hairs to whither, and pull back into the calyx, and the bud color to change. Even without a scope you'll see an amber glow. You can see the trichs in that photo - aren't amber.it looks almost finished but not quite. I would give it another week, or 2 at the most
nice looking plant
You have a point there2 weeks for sure. Far more growers harvest too soon than too late. When was the last time you saw a post that said - damn, I waited too long to harvest?