Stephanie, I'm not one for encouraging you to spend more money, but I think you should go to CS2 eventually. Since I'm a graphic design professional, I use all this stuff, and I don't think the alternatives would do everything you want/need. A few key points:
-- As you say, Bridge is very cool. One thing I especially like is that it lets you do such adjustments as cropping non-destructively -- you can preview, render, and export a cropped version of an image, but if you later decide it should have been cropped differently, the untouched original is still there. This saves you from the huge headache of having to archive "scanner original" and multiple "edited" versions of every important image.
-- Each successive version of Photoshop has had more 16-bit tools. You're a film-and-scanner girl (bravo for you!) rather than a digicam person, so you want to be saving your scan files in 16-bit, and the more editing you can do in 16-bit, the better. Again, this avoids big versioning headaches compared to having to keep your original in 16-bit and knock edited versions down to 8-bit every time you want to try something different.
-- Again because you work with scanned films, you have to deal with such problems as dust specks and scratches -- and that means you need the ability to do pinpoint retouching, not just make broad overall adjustments. I'd be very surprised if Photoshop's full array of retouching tools and filters ever makes its way into Lightroom (when and if it appears as something other than a feature-sparse beta; so far, it's the software equivalent of that old '60s stereotype, the great-looking secretary who can't type worth a darn.)
