Didn't read much of the replies, but having had a dog all my life, I can tell you it will make some heavy changes in your life. Good ones, but tough ones.

Bringing a dog into your home, especially a puppy, is like having a baby. Puppies need a lot of attention. Just make sure you can give it. Training also takes a lot of work, but some dogs are smarter than others.

P.S. Very cute pictures. My golden used to look like that, only a little darker.