I love
Farah; it's on my PNL and I'd use it. The
Farrah spelling is fine but I slightly prefer the one R.
Farrah Fawcett made the name familiar enough that ethnicity shouldn't be an issue - it'd be different if you were considering
Nazli or
Rafiqa, for example.
I think
Farrah and
Jacqueline works well. Nice choices :)