H.A.F.
a.k.a. Rusty Nails
I think that is why @Heisen mentioned that the best pics are about week 8 of flower. That was a hint that we don't need finished bud pics.4-5 weeks of veg and 9-10 weeks of flower. I don't think H cares when we chop them as log as we have have our best flower photos in before the end date.
I only veg plants 4-5 weeks, and depending on genetics we are gonna see between one and three zips per plant. Perfect amount to get a good taste of every pheno you find and see what flavors you like, and if it's something you want to snag a few more packs of while they are available.
But as far as testing goes, once it makes it past week 8 you are usually in the clear for it not being a tranny-fest. Late nanners when they are done is usually not a concern from what I have read and seen. Those are like turkey buttons saying "chop me already damnit!"