Well quick update. Asked my dealer to add the lighting pack and he has nothing in the pipeline that would include it. Which meant factory order. Asked about tech pack and with discount already secured and looking at a factory order there was no additional discount on the pack.
Have decided to think again about changing. Took the Mustang away for the weekend and really struggling to want to get rid of it. Waiting on updated pricing from Audi as Q4 pricing campaign has started and my pricing from last week is no longer valid.
Will have to see what the numbers say as purely on driving and emotion I don't think I'll switch and will resort to keeping a weekend toy and getting the bus despite the cost.
I know you are talking to the dealer, but remember if you go through the brokers you get discount on the Tech pack as well. I only added my Tech pack after the order was passed from the broker to the dealer and the dealer still gave me a discount on the Tech pack. Mine was a factory order so it can be done - and was a similar percentage discount than I had on the car already. Also seems like the current A6 model without Tech pack has a problem with folding mirrors not working when locked by remote.