Gavriel is a form of Gabriel, who is also known as the Angel of Peace (the angel who appeared to the shepherds in the nativity story). Gavreel would be an alternative spelling. The original being in Hebrew, so a different script with many possible translations.
If you like the meaning OP, then I'd use Gabriel. If you like the v sound more than the b sound but are worried about it being too unusual then I' use it as a middle name.
I've only heard of it from Guy Gavriel Kay the fantasy author.