rog747
I have not done as many of the historical Third Reich sites and museums as you but have been to the rally grounds in Nürnberg, and boy did it feel very strange standing where Hitler did and look out over the field. I can't describe the feeling, it just didn't seem right. I also went, on the same trip to the Dokucentrum in Nürnberg, and on a later holiday to the Berchtesgaden "Eagles Nest". If you can speak German and read some of the documents in these museums they provide a real insight into the "other side". Generally speaking we in the UK are fed, for good reasons, a very UK centric view of the war.
Your trip sounds really interesting from a historical perspective, and it is something that I would be very interested to do. History has two sides, and wherever possible it's good to learn about them.