Imants--I like your overview best
For my work:
1) While shooting, shoot WB card or use custom WB and shoot RAW plus small JPEG
2) Dump DNGs from cards to harddrive
3) Copy DNGs to separate physical drive. Work from this location
4) Use Breezebrowser on JPEGs for first cut. Move selections to "keeps" folder and burn this to gold-substrate disc.
5) Use C1 for second cull of RAW images (critical focus, etc...)
6) Set WB, bp / wp and some cc
7) Output proof JPEG and 16bit TIFF to output directory
8) Proof shots with client
9) Work finals for print in PS.
Note there are two backups, on different physical media. At the end of a hard drive's worth of shooting, my partner and I copy the RAWs again and keep versions at each other's location. So we're backed up a lot.