Couple of things.
1. Is it normal (asking others who breed, or know?) for a breeder to start crating puppies at just 2 weeks?
Are they crated with the mom and littermates?
2. Zoe came to us around 8-9 weeks, and if I had left her for four hours she would be dead. For two solid weeks I had to feed her (by syringe) every hour, 24 hours a day. Then for another 2 months she was sick with one thing or another and she couldn't have been left alone during the day.
3. Zoe is now 5 1/2 months, and we still get up and let her out during the middle of the night. She's tiny, so I feel obligated at this point. So, also be thinking about how tired you can be and still function at work.
4. I'm another one who never has "alone" time now...which is fine ('cause I
her lots and lots! But, she cries if I even step out of the room (she has barriers up while we're potty training--note that this is still going on at 5 1/2 months
).
If I had the choice, I would NEVER take a yorkie this young from it's mother. Even my cavaliers, who are 17 lbs full grown, didn't get to come home until 10 and 13 weeks. It's so easy to get so excited about a new puppy, but remember that the reality of that new puppy will be there for a long, long time. Especially with children, it would be just heartbreaking to get a puppy home, everyone falls in love, and THEN you find out it's not a workable equation.
I wish you good luck with this, and hope that whatever you decide it leads to health, happiness and fun!