Yes, don't forget the ECO button. We found that the engine doesn't shut off until the cabin is up to temperature if ECO is off. It will shut off if ECO is on. This includes the shutoff when stopped, not just driving.
I like the suggestion about just using the seat heaters. Also keeping the temperature at a low value should help. During daylight I also open the sunroof cover to let in as much light as possible. (Those people who tinted their windows to save on airconditioning -- here is where you lose.

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