Kiefer ?

Noooo, I'm not pregnant ( 'd be horrified to be pregnant again right now, omg!), but I'm bored right now ( ) and DH and I were discussing this name last night for a little boy, as we love traditional names, but not common one. Our DD (Isla) is Scottish as DH's grandmother is Scottish and so was my grandfather. Kiefer is German, my Grandmothers side is German.

Do you think it goes well with DD's name? What middle name would you choose? And do you have any similar name suggestions?