Middle names?

[sonneta.livejournal.com]

My favorite girls' names are Sophia (which means "wisdom") and Nadia (which means "hope"). If I could only have one little girl, I'd name her Sophia Nadine (Nadine meaning the same thing as Nadia).

But, let's assume I'll have two- what are some good middle names for Sophia and/or Nadia? Keep in mind that I like names with good meanings, i.e. I probably wouldn't use "Marie" because it means "bitterness".

Thanks!