I paid for TPMS and then was annoyed that it looks like a simple software switch....however it does depend on your ABS module.
I'm happy I bought it as with the 19" wheels the low side walls don't give much of a visual clue if your down on air and hence with the wife driving it a lot of the time I thought it was £75 well spent.
With regards the spec, you've got what I'd say are the crucial ones. You don't mention heated seats but I'd be surprised if they're not there.
I went silly woth the options. I've got the same as you (minus S4 engine etc and seats) and added lots of little bits
Folding and dimming mirrors
Adaptive lights
Storage pack
Rear side blinds
Rear load rails etc
rear side airbags
Load liner/ bumper protector
Dynamic suspension
Power tailgate
all of which really depend on how your're going to use the car etc.
I think you've got a good un and I can't wait to see the pics
)
