I already installed the 1000M Wheels and I must say that you hardly feel the extra stiffness. (I had to remove the 12mm and 10mm spacers kit as the Dealership commented that they do not fit together with the new wheels)
I'll wait for the springs for the Xdrive to go on sale (to come on the market for sale)
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, I know the car would look a lot better, but I wouldn't mind leaving it as it is now.