First grow - when would you harvest?

The two plants in the back are GSC from nirvana and the front one is a gorilla glue from nirvana. They are in 5 gallon DWC buckets. I’m using a 480 watt geek light from Alibaba.com with UV/IR (very similar to HLG-550) and also another 3500k+660 240 watt board. Temps run from 68 at night to 80-84ish when lights are on. Humidity is at 45-50. I “flipped” to 12/12 on 3/27, so today marks week 8. Just wondering when I can harvest? Seems to be the hardest part lol. I think I did alright up till now (please be easy if you see a bad mistake ) I’ve taken a few “samples” and tried it after drying a few days and damn...this test your patience! Lol. All pics were taken tonight. I tried to take the best ones I could with the magnifier but it’s not easy focusing that while looking at your phone. Any help would be greatly appreciated! Thanks!!!

More pics

Last of the bunch!