Bob,
I don't have specific answers, but have two relevant observations. First, version 8 is (imho) much better and more stable than version 7. Second, the short video tutorials and online reference material are mandatory. This is particularly true for printing, which works (again, imho) terribly unless you follow the recipes exactly.
Don't get me wrong - I think C1 v8 is the best thing out there, and all my photos get loaded into it first. Usually as Sessions, then archived into a Catalog. Catalogs had a rough time in earlier versions, and I'm still not relying on them solely, but I've had zero problems with them in version 8, so I might move everything there, as I did with Aperture.
Best,
Matt