I like the name. I like both spellings, and I really don't know which I prefer. I think I like
Farah better because
Farrah is harder for me to picture on a young child.
Farrah and
Jacqueline would be an okay sibset.
Farrah isn't "too" Arabic and
Jacqueline isn't "too" French, so they don't clash in the language department.
Farrah is more simple, but I think it still works. "
Farah and Jacquie" or "
Farah and
Jackie" sound good too.