Opinions on my husbands favorite name?

My husband has fallen in love with the name Callum. It’s a Irish name (he’s Irish) meaning “Dove” (I actually really love it’s meaning). I like it but don’t know if it’s the “the one.”

Our daughter is named Athena. Do Athena & Callum sound okay as sibling names?

The middle name has to be Christopher so it’d be Callum Christopher M.

What do you think? Please share your opinions!