Looking good mate.. You should be able to see the amber trichromes some time soon!!
I'd say 1 week - 10 days max, it's already been too long!! If you're using any kind of nutes, you should stop them and just use water for the time remaining.
You'll se the dry weight urself.. From my pessimistic angle, you should be able to harvest 20-25g DRY!!!
Cheers!!