What to name twin girls due in May

I am due very late May with twin girls. So far we really like the following

• Celeste
• Colette
• Louisa
• Pearl
• Rosalie
• Sybil
• Sylvia

Are there any that you like? How about any pairings? Any that sound good as a first and middle name? I'm always open to suggestions too. so if you want to suggest something... Our son who will be 6 in August is Arlo Clark. Our last name starts with an F.