a male is fine in veg as long as he doesn't pop nutz. that shows traits of autoflowering and don't belong in my grow op, can easily pop pollen and contaminate your grow. pollen lives for over 24 hours and you can carry it on your clothes .... through the vents .... cracks in the doors
unless you want to breed, kill em. and if you do want to breed, consider the traits of what you are wanting to breed first.
yes, takes @ 2-3 weeks for the male sacks to mature and burst, but once they do it will be a riot of pollen flying around. do you want to risk it.
after reviewing the pics again, I have no doubts it is male. females at this stage would show as a teardrop shape with a couple white hairs poking out. those are clearly football shaped and look @ 7-10 days from popping IMO.