Unique baby name opinions

We are having a baby boy. I’m a preschool teacher so I prefer names I have never had as student before (I know it eliminates all common names)

We liked the names Finn and Brooks. My four year old daughter, Leirah, was being silly and started calling him Finnbrook.

First reaction, that’s silly, you can’t smoosh the names together! But as the day went on, I was like “you know what, I dont hate it?” Kind of reminds me of the Irish name Finbarr.

Thoughts on the name Finnbrook? Too unique? My family shoots down everything lol so some unbiased opinions would be appreciated!