We have a Boxer (6 yo male) and a Great Dane (2 yo female). Here is a picture of them snuggling.
Boxers are supposed to be a very kid-friendly breed and we have found that to be true with ours (our baby is on the way, but with other kids he's been awesome). However, he is pretty "intense" emotionally; sometimes I think he's going to give himself ulcers with how much he cares about his "job" of protecting us!
Great Danes are also supposed to be kid-friendly, but there's that very kid-UNfriendly tail to worry about. It's about knee height on an adult and could knock you over unawares. If it catches a toddler in the face, it'll be over!
A Boxer would not fare well in Alaska, I'm afraid. We live in Nebraska and ours definitely despises the winter. He has a little coat to wear on walks, but he goes on pee and poo strikes when there's 2 feet of snow in the yard. Poor baby. We moved here from Southern California and he still hasn't gotten used to the shock!
Good luck with your search!
Oh, p.s. Our combined 200 pounds of dog go through about 35 pounds of dog food every 10 days. And we buy the expensive stuff for both of them, because Boxers have sensitive stomachs (read: rocket diarrhea) and ours always snitches from the Dane's bowl. So...figure that into your expenses!