They look healthy and developing well. Time to harvest happens when the plant is ready. Maybe 9, 10, or 11 weeks from flip to 12/12. No one can predict it exactly. There are variations between seeds from the same parent plants and effects of other environmental variables. Just look for the indicators of trichs color (minimal clear, mostly cloudy, 30%ish turning amber...this is a personal preference), no/almost no new bud growth with white pistils, brown/gold pistils receding/curling. I've never grown that strain, so I don't know how it tends to behave.
They're looking good. Just keep them healthy.
Tell us all the specs on your grow.