ThanksYou could probably wait a bit more, just look at them daily to see if the amber trichs are multiplying too fast. You do run the risk of it throwing some nanners the later into flower it goes but you could just chop the plant at first sign and still be ok.
The buds do look a little thin, are they being grown under the SF-4000?
I spoke with the friend who I got the clone from. He thought I should just go ahead and take it down. So, I did.
While trimming, I saw it was definitely time. That plant was started on 12/25/19, Christmas day. It had some trauma so it was never cropped in fear of losing it. It just went straight up with a lot of side branching. Its clone, is doing/looking GREAT - in the attached pic front and center.
And yes, it was under the SF_4000. Great light IMO.