Hey Cober, I've grown several Afghans, but the pistils on mine turned dark, and curled back in, probably ours are different strains, but you still got lot of white ones sticking up.
But they are yours, to do what you want too, if they were mine I'd wait , like all the folks said above, maybe even longer than a week.
Worst thing I ever done was harvest early, But good luck with them, nice looking buds.