Best workflow for creating a template for The Brady Bunch effect in CS5.5

I am using CS5.5 and I do not yet have the footage for this video. So, for this video I will end up with 9 boxes of different footage that will be behaving almost identical to the Brady Bunch opening.

I basically want to create the video with some scrap footage and then once I have the real footage I was just going to copy and paste the layer properties and keyframes from the old to the new. Does that make sense? Is there a better way to do it?
Also, all of my footage is going to be Sony XDCAM and shot in front of a greenscreen. So, any workflow tips for keying XDCAM in Premiere Pro/After Effects would be greatly appreciated.