Congrats!!! Good Luck with your new puppy, hope all goes well.
A side note on names, when I was looking for a name for our new one, I saw on here someone had named their white female, Charmin, so when you hugged her you could say "Don't squeeze the Charmin" and I thought that was adorable.
Kate though is a great name, I too like Doc Holiday. And Doc's Kate has a lot of the same personalities as a boxer, strong, independent, beautiful. It sounds like a good fit.
Good luck, again.