No solutions, but an idea for you to weigh. Most communities have fraternal organizations and similar groups that serve dinners to members and guests. Some of the kitchens used by these organizations are first class (other are not) but you might find one in your area that suits your needs and, if the organization will rent it to you, perhaps you'd be able to put something together that works.
BPOE (Elks) Lodges, American Legion, VFW, Moose, etc. are just a few ideas that come to mind.