Ignoring the 60 dB part, bells that you would here in a church carillon system tend to be the higher frequencies.
When I hear the term "Church bells", I think of the massive large bells you could hear on the other side of town (at least what I was exposed to when growing up).
So it SHOULD BE OBVIOUS, that the FIRST thing that needs to be defined is "exactly what type of Church bells, how loud and what is trying to be accomplished?
Without that being defined-we have NO IDEA what the actual needs are. So any and all "guesses' could be COMPLETELY WRONG or Right on the mark. So flip a coin as to what it is-----------------
With any "project' FIRST YOU have to DEFINE the TARGET/OBJECTIVE-then AND ONLY THEN will have you any idea if you actually meet the objective.