Congratulations Mike and you will have many kilometers of pleasureable driving.
Thats a fine machine you've got.

Your mileage will settle down after a while, I've done 24k now and get 9.5L on avg per tank.
The tank capacity has been debated here long and hard, consensus is, believe how much you see go into the tank and how many K's you drive, before you fill it again. The trip meter isnt exact either. Its meant to be indicative only, I believe.

If you like to monitor long term mileage, you can set Trip A to re-set itself each time you fill up, while trip B will continue to record mileage and average you all of your cars fuel consumption.

And yes definitely microfibre everything, 2 buckets and lambswool mitt(s), with top quality product.

Stay on here and let us know what your experience is.

cheers,
Des