Excellent photos. Thanks for sharing. I just did mine without your photos, but I am sure that seeing your photos would have increased my confidence to do this task. I agree with the assessment that on a scale of 1 to 10, that this is about a 2.5!
If you are competent enough that you can change a wheel, you can change this seal yourself. Save the dealership or shop for the really heavy duty stuff, and save yourself the labor costs.