Ok. So I love the fur-babies I already have and have also fallen in love with the Biewers due to all these pics that keep getting posted

Once my #3 is fully potty trained, I think I'd be ready for #4.
So I sent my husband a pic of Rozi to look at and jokingly asked what he thought about a forthe. So his response was inquiring as to when I'd like to bring in a new addition and when he check into the local insane asylum. Now knowing my husband, if he means NO he will say so immediately. I wonder if I'll be able to convince him of a 4th.
He absolutely adores our 3 just as much as I do. We had a quiet weekend (for once) and all we did was play with them and our skin-kids. We both carried a pup around with us all day long.
I'm really wondering now if he would be open to this idea.
Whats funny is that before we got the pups he was adamate about not getting another yorkie....well...when he met our latest additions, he fell in love with them at first site just as the rest of us did...and we went from getting one puppy to two at once!
So question...
is it really a big deal to go from 3 to 4?
I feel as though I went through the biggest change with going from 1 to 3 already