why not either use some SM58s like everyone else does for live
shows, or buy some cheap LDCs. Harvey's forum has lots of threads
about good quality cheap LDCs.
I've got a couple of links to rental sites on
http://www.pfarrell.com/prc/rentals.htmlbut you are closer to Nashville, they have lots of
places there. But I'm not sure it will be cheaper
to rent. After all, if someone knocks the stand over,
you don't want to cry over a Neumann.