Should I defoliate, or let them grow? I see some b...

Let them grow and get all dripping with frost. They look great no burn no deficiencies. It looks like you already stripped the lower 1/3 or so. I would just try to tuck or even tie down or back a few of the rebellious fan leaves here and there. Getting as much light on those buds is best since they are starting to fill in. When your closer to harvest you can start selectively remove a few more fan leaves a little at a time. Keep up with your nute regime and sit back and watch those buds start bulking up over the nest few weeks. All your hard work will pay off in the end. Good luck