Which name should I use?

So I have project for my class where I have to take care of an egg baby for a week. I need some names. I've decided to make twins and I already have one name which is Kip. I just like that name for some reason. But I need a name for the other egg. My friend wanted me to name it Jeremiah, but I was thinking Kian to match with Kip. So which name should I choose? Jeremiah or Kian? You can also give me other suggestions.