Well what do you mean monitor?
A pc hooked up to a projector or plasma that accepts a vga or dvi in put?
Or a pc or dvd player going in through s-video or something like that?
Just remember that your content is local so file size is not that important.
But big hi res graphics or even complex or huge vector graphics can bog down the flash player, even if it's playing local at full screen.
If you need full screen graphics, with good reliable motion, you may want to go video with your project.
You could make a movie at 720 x 480 at 30fps and export it as an avi or quicktime, and play that through windows media player, or convert to dvd and author it to loop.
You could also use a program called procoder2 from canopus that will take pretty much any flash file and turn it into good video, but you can also do it straight from flash.
Give us some more info on the project.