Well, using industry standard formating, at least what I think is industry standard, the screenplay is 133 pages long, not including title page. It is a cross of space opera, cyberpunk, and a touch of fantasy. Yes, it has dragons. One particular dragon is quite important in the overall story.
I think the easiest way to make sure to document the copyrights is to print it out, get a large brown envelope and then mail it to myself and don't open it. It would have the date time stamp on it so it shouldn't be a problem.