I'd get the Dark Graphite (Platingrau) metallic. Space gray and Black Sapphire are exceedingly common. The Oyster interior looks nice with the Dark Bamboo wood trim. The Napa leather is a nice upgrade (the Nevada feels like leatherette) but I'd rather have a nice colour rather than nice leather I only feel when wearing shorts.

I like the Sport package but don't see the point of 20" wheels. The 19" look pretty nice, but that's just my opinion.

Based on my experiences with the base suspension, I strongly recommend an upgrade. In the US, this means Adaptive Drive.

I would go for the Napa leather dash, it is a very nice touch. I would also recommend the Rear Climate package since it's not much and privacy glass is useful along with the window shades.

The High Beam Assistant is useful if you live in a more rural area.