Well the pics are a little blurry, but from what I can see they need a while longer before harvesting. They look healthy, and are flowering fine, although kinda slow if they have been flowering for 6-8 weeks.

I would not cut any fan leaves until I chop the whole plant. A few weeks before you harvest you should start to water with nothing but plain water. Other than that all you need to do to prepair is get a spot to dry and cure them.

Peace