Disclaimer: I know nothing, really. But that said, while the rotating wheel idea is totally cool, it will be a bitch to find big sheets of film, and expensive (4x5 film is not that common, and is difficult to handle to load and develop. The strip idea is much more practical, because you could use 35mm film, which is easy, and goes into most enlargers. How would you print the photos? 35mm film has a much better shot (no pun intended) to fit into some kind of automated photo printer. Don't know if short strips will be exactly easy, but you're closer to a practical solution with 35mm film.