Couldn't wait!
All of the pop ups worked as described, though they appeared a little squished down on my display. This was only evident for the round items. It could be my resolution selection (1920 x 1080) causing it.
I left the glass as was, haven't tried changing to FSX glass, no observable negative issues.
Nitpicks:
Your tailwheel steers with the rudder. According to another on line site, the tailwheel was fixed. I would need to check some of my books to see whether the many variants (6A, 6J etc) differed in this regard.
The FS 2004 Phoenix start smoke does not display well in my FSXSE setup.

It resembles a burning tyre ignited just behind the undercarriage; it issues a plume of thick black smoke, which rises vertically through the wing - most undignified. I will need to introduce a different effect in my .cfg
Opening the side windows did not seem to increase wind or engine noise.
As I've previously said, I find the Airspeed Oxford and close relatives very pleasing to the eye; this will be an often used aircraft for me, many thanks, Dave!
