A lot of people who study at the Art Center in Pasadena seem to do a project that involves shooting a whole roll of 35mm film as a single image and contact printing the whole roll without cutting it. You might ask what they use.

With just a sheet of glass, I'd be concerned about getting enough pressure across the neg. Pano format spring back printing frames sometimes have multiple panels each with their own spring (my 7x17" printing frame has three springs, for instance) to address this.