Greetings Rev. Bradley,
Please have a look at the demo site:
demo.compojoom.com/hotspots
In the first category you can see 100+ locations.
In your case - it will look nearly the same. Trough the backend you will have to enter the addresses, you can use the short/long description to add contact information, opening hours, you can also add a picture of the churches.
People will be able to see the churches on the map and to use the direction function to find the way to this location for example.
You can also create a second category - schools or hospitals that are sponsored by your church... (just as an idea).
Yes, I definitely think that you can use hotspots for this.
Kind regards,
Daniel