If the cappy fit's wear it!!
You are just great the way you are, don't worry about us here, you have too much to worry about without bein' worried about being a grumpy captain - love your posts btw, always so genuuine & real, no bs which is why I guess it's killing you to be dishonest to your Dad.
Puppy brand new I think mrs cappy is one cool mama & the little cappies too young to be a problem.
Just take it easy, DONT be hard on yourself. I suppose there will come a time when the little ones will put you in it "grandpa but the birds evolved from dinosaurs ....who is Jehovah?"
However you are new to this, only you know how best to approach dad, when the time comes...I understand how you feel, it's a nightmare..you just dont want to hurt them, go easy on yourself this is NOT YOUR FAULT OR OF YOUR DOING