R66 has much higher payload, sure. But Robinson is no no, that simple. Will not risk come in the same situation again as we have had with the R44 and lack of proper support from the manufacture.
Denmark is flat as a pancake. Highest natural point is approx. 560', don't need to go to 7.600 or 10.000'. Southern Sweden not much higher neither is northern Germany.
Don't worry, I have done my calculations correct. So good that even the Bell representative had to admit I was right and their representative was wrong and checked their calculations at the presentation.