How long do you think until harvest?

I’d guess 7-8 weeks, but it’s impossible to tell just from this photo. You should check the trichomes with a USB microscope or jewellers loupe in order to be certain. You can also choose when to harvest based on the effect your looking for in accordance to the ratio of milky to amber trichomes. Either way though, 7-8 weeks is probably what your looking at. Happy growing!