Erik,
Don't forget to include software and hardware product research, budgeting, installation of patches and upgrades. Don't forget about one of the biggest jobs of the CAD manager now that upgrades are coming so often, configuration and compatibility issues. Also I spent a lot of time doing technical support and troubleshooting.
Now here is the story of what happened to me when I tried to what you are doing now. I tried this last winter. I wrote a report about what I do every day, what CAD management is and why I should be CAD manager. My fried in human resources read the report first and told me that it was excellent and that I had covered all the bases in a clear and concise manner.
When my boss, the Chief Engineer, read it he called me in and told me that I obviously didn't have enough to do if I had all this time to "play around" with LDD. He said that CAD is nothing more than "a glorified straight-edge and pencil". This is LDD, Civil, Survey, and CADOverlay we're talking about here. He called a few meetings with the CAD users, went over his "Six Rules for AutoCAD" which I posted here about last spring, told me that I should continue to do everything I was doing but to forget about an upgrade.
I started my new (and better) job in the IT department at the end of August. Since then the Deputy Chief Engineer and the ET4 have also left. I hope you don't work for a someone like this guy.
Good luck, Erik. Please keep us posted.
Kim