Geoff,
First off, excellent choice for the McIntosh System. I have been eyeing up a similar setup for my Claret for over a year now, but other plans have prevented me moving with it. Are you happy with it overall? Did you use a harness to wire it in? Did you run new speaker wire?
Also, you can notch the black trim on the backside of the stereo door and it will accommodate the two large knobs on this head unit. I ran into a similar issue with my 2004 WRX stereo in my Claret.
In my opinion, I would go with a different shade of window film, particularly for the fact that I do not like that "purple" look to many types of films that I see on cars.
I would also seek out an additional set of tan dash tweeter covers in order to help seek a more inconspicuous install of those rear tweeters.
Other than that, it looks great!