is better to get a film projector on 2nd hand. If you build something at home, atention with the lamp, some lamps goes hot and it can burn all the film.
Anyway, congrats its a great finding
Print a holder for several of the individual negatives and replace the main lamp shade with a good bulb and pale walls it would be an interesting effect
I’m not thinking of displaying this with a projector, but more akin to this…
Since this is a theatrical trailer, I’m guessing it contains a lot of the action from the movie.
And since every second has 24 (?) frames, there should be plenty of material for several displays.