LOL... hypothetical? mmmm I dont have 5 but coming from a family of 8, we all shared as many as you could cram into a room!
So.... on another note.... do I do 4? Is it getting easier now #4 is a bit older?
4 changes everything I have found - size of house, car type (no more sedan!) family holidays...

But if you are happy with that - definitely!!! It does get easier as they get older, i am less stressed these days but more sleep would be nice... Lol