Male? Or not?

those are stipules. they are not sex organs. There are no preflowers on this plant. some photoperiods will show preflowers before being forced to flower with a 12/12 light schedule (10+ hour, uninterrupted dark cycle), but not all will. you could give it 1 or 2 long nights and you'll see sex within 7 days, but it'll also "re-vege" whichcould have a drastic impact. it's a difficult thing to handle if it re-veges like crazy. different scales are possible. 1 cycle wtih long dark period shouldn't cause too much havoc? i still need a good SOP for sexing reg seeds, myself. that's what i plan to do 'next' time i have to cull some potential males. give it 1 or 2 nights of long dark and hopefully avoid major supercropping occuring.