Pronounced kow-sahl-yah, I don't like "cow" for a first syllable. Pronounced koh-sahl-yah, I think it's too reminescent of Cosell, as in Howard Cosell, the loud-mouthed sports announcer from the '70's era. As kah-sahl-yah, it's ok but because there would be a tendency in the US to pronounce it as "cow sale ya" or "Cosella", I'd change the spelling to something more phonetic, like, Kahsalya or add an "L" and change it to, Kalsalya.