Selecting the correct product(s)

This is coming from a noob so you may disregard this, it may not be good advice:

Personally I'd be weary about running all these PoE devices from one switch. If that thing breaks it will be really expensive. I'd much rather separate them into smaller units, plus if one breaks you don't lose all cameras at once.

Secondly you can group them together so that you have less wire to pull.

I have no idea how much power the cameras need. Btw. that's a lot of cameras, I'm guessing this church is in California 🙂