I see hazy trichs there plus a few amber ones, degradation has begun if those are indeed ambers. Auwia and sandwich see clear in their comments so maybe my iPad is showing it better or worse that their screen but I’d say it’s real close. I even see purple in the stalks of some of those glands so good grow!
I would say first of all, don't focus on the sugar leaves, focus on the buds. The fade is happening and the buds look great but there are still quite a few white hairs which suggests she still has life in her!
That's a good estimate. Generally, once they start changing, the trichomes go about 5% more amber each week. This will put you right in the 20% sweet spot. I prefer slightly more than 20%, but that's all preference.