Make Our Garden Grow from Candide by gay composer Bernstein.
Its a killer to sing, but there are 2 solos (M/F) and a chorale that will leave singers and, if it is done well, the audience breathless. It divides and divides so there may be 8 parts.
Look at it.
Are you a member of the G/L Chorus Assn? I can't remember the official name, but such a group exists with literally hundreds of member groups. Find them on the web and ask this very question. Some group has some arrangement for you and wouldn't it be nice if they let you use it without a royalty?
Have fun.
PS - I was a charter member of the NYC Gay Mens Chorus way back when.
"If my life weren't funny, it would just be true. And that would be unacceptable."
--Carrie Fisher