Yes the newfie will most likely not care about anything so long she gets to play too, in between naps that is.
she like to play mama! ;o)
When we got our dog from the pound they said she was a lab/rottweiler mix, I was hoping for a nice 60 - 70 pound massive dog. Instead she is maybe 45 pounds and naps on the back of the couch like a cat.

So much for that idea, are next dog though will be newf or maybe another german shepherd (we had one a while back). Newf's are pretty expensive right now though.
you can probably find a Newfie for around 1500, at least in this area. you could also get on a Newf rescue list! as apparently you are aware, you just can't have a better dog with kiddos around!
You're actually considering it? Cool! Dont tell the other breeder near you though. If she is so young you can't breed her for awhile anyway - right? So a year might work out for you, except for the breeding males costing even more money
typically breeders put it into the purchase contract that the animal is to be nuetered, and then there is actually an adjustment that can be made to the registration papers so that you can't breed. well actually obviously you CAN but any kittens could not be registered. when I was breeding Newfies before, I had another breeder as my mentor. I would want to do it that way again. a good breeder does not see competition, they see someone to work with and breed another line so they don't inner breed too much.