What shud I look for when decidin to chop her down...

Well depends on how hard you flushed but she should still bulk up a little regardless of nutes since she can just suck up required nutrients from the lower fan leaves, and i don't think you would consider loss of fan leaves to be a real loss... You should chop her depebding on trichomes (not pistils, as those can be completely different from strain to strain) and also depending on the type of high you want you will chop with either mostly milky trichomes for a sativa type high or with mostly ambar trichomes for a more body directed high, you can do either regardless of the genetics of the strain, you can aim for head high on a kush and the terpenes will give u the body while the thc works on the head aswell so you get a mix of both effects and vice versa. Good luck growmie and stay lit.