How can someone grow plants that big, beautiful, and healthy, and not know when to harvest? They look great bro, very well done. You can give them another week easily, maybe two or even a bit longer. They are definitely close. I personally like to wait until the plant looks like it's on it's way out, when the majority of the green fan leaves are turning brown and crispy. Easy way to tell the plant has used all, or at least almost all, of it's stored energy reserves to boost the final stages of bud production. Very nice looking grow, enjoy!