Which girl's name is better?

So, on 26.06.2017 I was told that my mum is 7 months pregnant (she's so skinny, I couldn't believe it) Anyway, we don't know what the gender is (mum doesn't want to know). Although, my mum and sister are convinced it's another girl 👧 I'm hoping baby's a boy 👦 because then my parents would have a son, at least one of each gender and I'VE ALWAYS WANTED A LITTLE BROTHER 😍 (I won't love her any less if baby's a girl. The fact my mum is expecting is a blessing in itself as she suffers from PCOS, but it would be a bonus if the baby's a boy) We have already agreed on a name for a boy: Kiaan HOQUE. My name is Tanya and my younger sister's name is Zaara. We are finding it hard to decide which name would go better with what my mum has named me and my sister.

Mum's Due Date: 15.09.2017

Your opinions will be greatly appreciated ☺

Many thanks,

Tanya Hoque