Start in normal, drive till the engine and transmission have warmed up to proper temperatures. Put everything apart from the suspension (unless ripping through twisties) into sport, enjoy. Plus I noticed that the ZF is less jerky in normal city speeds in sport; looking at the gears chosen - just...
Never wait till 10k (based on personal experience maaaaany years ago looking at what oil looks like after 10k). My rule of thumb for any car (that's over 300-400 hp and gets some from me) has been simple: break-in period as per manual, oil+filter change, wait 5,000 km (7,000 km max!) - do...