Hmmm, holographic plates aren't cheap and they're as slow as molasses, if not slower. This seems a bit like going to the moon by way of Venus! If 4x5" or 8x10" film sags too much for registration, maybe you could sandwich them between two pieces of glass and shoot them in a spring-plate pressure plate.

For me, figuring out the dye process is paramount and everything else is secondary, but I can't fault you for being imaginitive.