That’s a pretty good summary, @timtam! I think you covered every point I can think of!
I don’t totally agree with #5 about shooting ISO 400 or below all the time. If you limit yourself to ISO 400 and an aperture of f/6.4-f/8, you’re going to get more motion blur than anything else! Of course it depends on your camera, but any modern DSLR can go to ISO 1600 and be just fine for web-sized pictures, and even small prints. Of course, if you shoot RAW, and use the advanced noise reduction software available nowadays, you can get very decent results!