cloning during flowering is possible but takes longer to root...also it furthermore stresses the plant (though if it makes you feel any better females usually show sex later then males)...as for the delayed flowering a week and a couple days with no showing of sex isnt that bad...ive seen worse...stand in your grow room when its night time for the babes and make sure theres no light leaks..darker the better...also make sure your pot size is good enough...looks like the level of dirt could at least be brought up a bit to give the roots more room to grow...also scrap the foil...bare walls would be better then that garbage...other then that the plants look nice and healthy