Hey Rusty,
I've always had a little issues with breeder recommendations...they always seemed to be off by a week or two past when they say. But it is mainly a guideline so take it loosely.
Your buds are coming along great, nice pistil changes. I think you could start defoliating some of those bigger fan leaves out and free up some air and light. Your trichomes still look pretty glassy and i dont think i saw only 1-2 amber ones. So I'd say you're gonna be 2-3 weeks more and would start the flush here in like 3-5 days.👍
Happy harvesting.