In my 5 years of brewing, I've never encountered a brewing club the way you describe yours.
Are you even sure it's about brewing?
I mean, donating to charity is one thing, but non-profit tax exempt status? IRS forms? Radio and media cross-promotions? Catering?
Good God, that's not at all about brewing: that's running a large organizaton for the sake of running a large organization.
Homebrew clubs are like book-reading clubs; they're not supposed to be like the Kiwanis. Nor the Fraternal Order of the Water-buffalo. People get together to discuss brewing, beer, and how to improve your skills. (Or to discuss plot points and writing styles for the book clubs).
Maybe it's done alongside a potluck. Or pairing cheese with your beer. (Or which wines pair better with Historical romances compared to murder-mysteries). Catered events? Jeez-Louise, that's just weird.
IRS forms? Accounting? Homebrew clubs are about everyone chipping-in for pizza, not keeping tax reciepts.
Just my two scudi.