Always clone to sex mate,what you should have done is let them grow then took clones of and once rooted put on 12/12 off but kept away from the big plants.They would have shown there sex in a few weeks then while you was waiting the others would have been growing and ready to flower by the time they was showing there sex.................................tyke......with them been of a female you might get away with it,if they had been femanised seeds it would have been a defo no no