What's the problem with Km/h?
When I learnt to fly the aircraft had a scale in Kts. The aircraft I fly now has it in mph. All became very simply when I decided to forget about flying kts or mph, and simply fly the numbers. My approach speed for example is 80, flowing to 75 over the hedge. I needn't concern myself during the approach whether the scale is in kts mph or km/h so long as the needle is pointed at 80.
dp