Yeah those are good pics... I forgot to say one more thing. It depends how mature you let your plants get in veg as well for how fast they show their sex in 12/12 lighting. Plants can mature to the point in veg where they show preflowers, so you could potentially see pistils while they're still in veg. Most people don't get that far because most plants need to get pretty large before they do anything like that. My big mother has had pistils showing for months now in some areas, even though its not actually flowering. Thats a big reason why the clones I take clearly show me their goodies 7 days into 12/12.