Can you please help with my dogs names?

About 3 weeks ago I got an itty bitty white and black Chihuahua puppy I haven't named her because I wanted to see what her personality was like first! but on Saturday i am getting a brown puppy with a black muzzle and black paws who is a Great Pyrenees/Saint Bernard. I want something ironic for both I love the name Bo for the big dog but i would still like your opinions! If possible id like them to go together like for ex: Jack and Jill. Thank you!