Hey Mikey167, I have read that sativa and sativa dominate strains like Strawberry Ice or any haze blended strain Blue Dream Haze for example tend to go a little longer in flower than Indica dominate strains., say 10-12 weeks. I am in the same boat with you I have the 2 sativa dominate stains mentioned above growing right now starting week 9. As for myself I'm letting them go to week 11-12 and starting my flush next week just feeding them a sweetener with the PH water of 6.0 I want to see a fade on my fan leaves this way I know the plant is ending its life cycle and using up the food so it will cure and smoke better. As far as your trichomes go, I would let them go to 70% milky and 30% amber for a less speedy high, so maybe a few more weeks of flushing and more bulk on the buds, its your call. my opinion is we waited this long what is another 2-3 weeks? once you cut it down that is it right. It looks pretty healthy, you did a good job on the grow. It could not hurt to let it go a week or 2 more. hope this helps.
Drewbie