Oh, wow.
Bear with me here, it just sounds like a fantastic opportunity and it could be done so many different ways.
Are you going to be recording carillons or just a couple of big bells together? Do you want to document the precise sound of each bell, or are you interested in capturing the sound of the entire instrument (i.e. possibly including the building and or reflections from nearby buildings and other things in the environment)? What's the ultimate purpose? For a bell-making company's records, for a documentary, for change ringers to share among themselves, for a concert recording?
Depending on all of those I might want to record anywhere from two to eight tracks and could need / want very high SPL mics or just might want a few sets of good, clean condensors.
For what I've envisioned just now, I'm dreaming that you're working on a documentary on carillons and want some variety in kinds of recordings where one might go for:
1) a very artistic recording of a performance that includes
- a pair of mics hung somewhere 20' straight out from the side the building in the instrument's sweet spot,
- a pair near the ground in the best location people can normally hear it from,
- a pair in the keyboard room
- a pair pointed away so that reflected sound could be captured
2) Some "IN YOUR FACE" recordings of the bells from a few feet away
3) Recording in the keyboard room to also capture the sound of the keyboards
I'm thinking only 2) would need the very high SPL mics and you might be able to get away without recording from right next to them (so you still might not need the very high SPL mics).
Unfortunately, I can't give you specific advice, but maybe someone at these sites can help (If we can't):
http://cccbr.org.uk/bellrecordings/ (and
http://cccbr.org.uk/ )
http://www.gcna.org/recordings.html (and
http://www.gcna.org/ )
Let us know how it goes!