Movies showtimes website

I’m planning on building a movies showtimes website, and I’m wonder if I could get some tips on how to implement it in WordPress.

I’ll be receiving the showtimes informations from several automatic and manual sources.

The structure will be something like:
– Cinema Venue (theater)
— Subvenue (the room # where the movie is being played)
— Movie (with description, poster, year, actors, etc…)
—- Schedule date and time

I was thinking of Movies and Theatres be posts in a specific category.
Movie poster would be the featured image. Other fields as year and imdb id would be custom fields. What about actors? How would you do it?
I could then have my own tables with the schedules linking the movies posts with theaters posts and the date/times of exhibition.
I would then code a plugin that would show a homepage with all the searches using these details.

Would you do it another way? Any suggestions?
Would you make something from zero instead of using WordPress?