I never was good at time periods, lol. A real oversight on my part. But i do think 24hrs sounds about right, and believe me it is WAY longer than it sounds so start counting hours! If no progress then you may begin assisting after that amount of time, checking to see how the veins are first, if theyre still red hold off until they look good to go. Check that article i sent you in PM for reference.
Its funny that 4 is a supposed single because i was gonna mention to you that it looked pretty small, i would be shocked to see another baby in there. SO HAPPY that he was able to make a hole even though he was malpositioned!! Excellent job little guy!
Oh also, i think there may have been another yolk in #5 that didnt develop and ruptured after rotting for a bit, killing the other baby. That green goop is pretty thick to just be amniotic fluid (i cant remember what you call it in an egg lol) so that might’ve been the cause. Sorry for your loss

 just be prepared emotionally for it, double yolkers are rare and hard to hatch. Otherwise lots of people would be successful at it.
