He did say what hes growing SLH . super lemon haze..
Op if it was me . i would wait till i see more cloudy ..Sativa isnt somthing you want to rush .take youre time . you got plenty of time ..
I've grown super lemon haze three times now. I would say now is the perfect time to flush. Harvested all of mine quite early - 65% cloudy 30% clear 5% amber - and was very happy with the results.