I love both Chloe and Zoe. I have a 17 year old cousin named Zoe, so I could never use the name. I actually think Chloe sounds better with your DD's names. Hayley, Skye and Chloe has a nice sound to it. None of the names seem to stand out above the rest.
Side note: Chloe Rose (my fave Chloe combo) would sound perfect imo!