Dont even think of chopping any of them down,those buds are seriously immature,you have atlests 3 weeks but i'd say a month to get fat nuggs that will lay you out,wait till about 80% of the hairs are brown,those bads have not even started to fatten up & swell yet,but they will,once they start to swell you'll be thinking oposite of what your thinking now,you'll not want to chop them once you see them swell up like a puffer fish.
You got a long wy to go,i'd bet those plants have not been budding for more than 5 weeks.