Actually the pros do vent sexing. I think viewable only in the first days.
.... Even they only get it 94% correct at best. Most rate the sexing at 80%
Just keep them and let them grow to maturity. When they become trouble makers, then chose your other options. No reason to worry before that time.

Just keep them and let them grow to maturity. When they become trouble makers, then chose your other options. No reason to worry before that time.