Thats shitty you got a box all i got was a seed shaped cardboard with a plastic deal with seeds in it. You should wait till most or all of the pistils ( white hairs ) have turned orange or red or brown what ever you wanna call it and the trich's ( tiny crystals on the leaves ) are milky to amber. youll need a magnifier preferable 60-100x zoom but i think 30 will do. im thinking you should wait and you will be rewarded with fatter buds and better smoke. just my opinion.
Just for me, How much did your vk strech once you flowered them. Mine seem to be geting extremly streched out and i have a 1000 watt light siting 6 inches above it. also please submit a photo i wanna see. I havnt seen much about the strain on here.