I've created a file mgmt. mess with backup versions of a song project and clumsy sandboxing of ideas, etc., not to all the mention autosaves and recovery files.

Can I and is it best save my latest-bestest project file as a *.cwb bundle, clear a lot of stuff out, then unpack the bundle and pickup where I left off? Anything I need to do in addition to that? Thanks.

Hi. I would do a save as to a new folder. This will clear up the unused files in your project. Open the new version to make sure all is working as it should.
After you have done that, you can delete the old folder.
All the best.

avoid .cwb files like the plague.  i've had a few become corrupted, and sadly, there is no remedy