This Macbook Pro for Film Editing or Design?

I think you will find that the smaller MacBook pro is just not enough for film work; the screen is way too small. When you are using a video editor, screen space is very important. If you've looked at the interface for even the basic iMovie, there's a LOT of stuff going on (timelines become very important in video editing, and trying to see multiple tracks as well as the video frames themselves becomes very difficult to do on a small screen). You will need a number of extras to be able to work on a laptop for video editing anyway: an external hard drive (video files can get HUGE very fast) and a large monitor. If you can, go all the way up to a 17-inch MacBook Pro. The 15 inch would be better than the 13 inch, but the 17-inch is much more reasonable regarding screen space.