When to harvest?

At least another couple of weeks. You want to see a few things: 1. all those white pistils turning to a rusty orange colour and shrinking back. 2. Buds swelling up and packing on weight fairly rapidly, eventually slowing down. 3. Leaves being cannibalised and dying off. After you see at least 2 of those 3 things, you'll likely be in your harvest window and you should check the trichomes if you can. A 40x or 60x Jewellers loupe on amazon is very cheap and will help you immensely in checking the state of trichomes. You'll want to harvest when you see a good amount of amber coloured trichomes. The exact amount is preference, really, I tend to go early at about 10% ambers.