Week 9 minimum amber but seems ready

It's still growing mate, check for Amber Trichomes before harvest. The amber hues you refer to are not so reliable, you have Many white hues signifying growth. Don't harvest yet

Get a jeweler's loupe. They're cheap, at for a pair of 30×-60× loupes. Or, if you have q good camera on your phone, you can use that and take macro pictures. They will help you see the trichomes on calyxes. You want the majority of them to be cloudy/milky. At least a 90%/10% cloudy/clear ratio. Now, you just need to figure out what kind of buzz you're looking for. If you like couch lock, wait until 25% of the trichomes on calyxes are amber and the rest cloudy.

She looks like she is starting to foxtail. If you are seeing a few amber trichromes on buds not leaves I would water a day or two more then start your harvest process. Nice buds and enjoy🌱👍🏻

I aggree with Ctrellis90 and another factor would be if you have enough time to let them be longer 🤷‍♂️ if you save every grow one week it is nearly one grow more in the end of one year ! So a few factors to consider✌️🏻😎💚💨You could also cut the top buds and let the lower stuff grow a few more days🤷‍♂️😁 many ways to rome in the end I would chop them down and fill the tent right away again personally!

Depends how you like your buzz my friend. I would wait for at least 20% I like a bit more personally (45-50%) but if you don't mind a shorter acting buzz with a quick head rush then sure. Chop her down. Hope this helps