Hi Mattj - Wonderful idea but I am not sure because i have not tried it yet, but by using the scaling trick showed by Michael, once you have that first image in place, as long as all the other images are the same scale, then you should be able to select the show in all views option in the image menu, then once you place and scale that first image in place, there will be visible lines in the other views that you can use as snap and reference points.

Does that help ?

Martin Spencer-Ford