Hi AJC
What about using your middle name for a girl and DH middle name for a boy. my first daughter has myy middle name and if this one is a boy he will have DH middle name. What about a version of your maiden name......this is what one of my nephews have, my sisters maiden name and that is always nice too.
Goodluck choosing names is the hardest thing.
Other suggestions:
Sophie Louise
Sophie Lee
Sophie Jane

Zach/Zachary Tyler
Zach/Zachary James
Zach/Zachary Marcel

GOODLUCK By the way your secret of names is safe with us....