That's so funny, I never thought of having 2 kids and 2 dogs as being a lot! After all, everybody needs a buddy, right?
I have 1 kid, 2 dogs, and 4 cats. I would definitely add another kid or 2 to the mix! I might even be brave enough to add another dog.
Heck, if I could find another place to stash another litter box, I'd consider another kitty as well.
I think it's great that you have 2 dogs and 2 kids! I guess some people will find something to criticize about no matter what you do, though. You're among animal lovers here, so I think we all think you're just fine!