I'd rather have a nice target crown on that caliber.
You can have an 11 degree crown, or a recessed crown AND a brake. The crown has nothing to do with what, if any muzzle device you add.
Yes put a brake on it. You don't have to, but it's more fun to shoot with it. Loudness is void from this argument. If the rifle isn't suppressed, then it is loud, and you need hearing protection. Might as well have half the recoil to go with it.