Replies
Definitely Clara. Both are nice names, but when in doubt I will recommend the classic.
Definitely Clara, though only if it doesn't rhyme with Sarah. If it does, then Clare. Savannah makes up most of the country I live in, which doesn't seem like a good choice at all. Anyway, Susannah is classic, timeless and not geographical.
Savannah, but I love both
Clara.
Clara, although both are lovely.