In what form of re-publishing do you envision? Still having them at 72dpi, but have the original files sized for a larger screen, scaled down on smaller browsers. There won't be any problems taking them for print because they will turn out ****e! If people take them for the web, well there isn't that much you can do about that as far as I know...
It is about balance, but the images you have now loaded instantly for me, so maybe there is some flexibility with image size still.
Have you considered the design of the following pages as much?