Well, I'd choose
Avery (I prefer it as a middle name;
Clare Winter Avery, but one of my friends likes
Avery Stella, which I think is lovely). I wouldn't say no to
Avery Elizabeth, either.
Emily I'd consider for a middle name after
Emily Bronte.
Chloe,
Ellen &
Ann are really sweet, too. Then again, I adore many names that aren't 'name nerdy', I guess.