pic four is the only one with more than a rare clear trichome if not mistaken? lower on plant? Lots of amber, so degredation of THC is starting in quite a few areas.
If so, sure looks ready to me. could cut off top portion if lower portion is more like pic #4, if you want the hassle.
If you chop entire plant and hang it, or even individual limbs, the plant is still developing while alive after harvest. Smaller pieces = faster it dies, of course. So, you'll get a little more development than what you see on harvest day, typically.