You can add
Keturah (keh-too-rah),
Hagar's other name. :)
What about the names in Hebrew?
Sarah : sah-rah
Sarai : sah-rie
Avram /
Avraham: ah-vrahm / ah-vrah-ham
Yitzhak: yeetz-khak
Ishmael: yee-shmah-el
I like
Sarah,
Sarai is pretty too (and cute meaning "my princess"). Others are not really my thing.