Wow. Thanks so much for the thorough reply. That's exactly what I was hoping for.
Just got done cleaning and painting the new fan blade. The old one will go into the scrap pile. Yep, I was planning to repair the shroud with a rivet gun and whatever material I can find. (vinyl siding, vinyl flashing, etc) The junkyard wanted $75 for the whole shroud, but I think I'll just keep the one I have for now. I'll wait til I drop a new engine in it and completely restore everything under the hood at once.