The minimum actual connection time is about 30 minutes but that cannot be purchased. The scheduled flight time has plenty of fat in it. Your position in the aircraft does not affect your connection. If you are listed to make your connection you will almost certainly do so, even if you are the last off on the second bus you will still make your connection. You will be dropped off at Gate D5, very close to the centre of the airport. Connections are regulated by the aircraft's actual arrival time. If you arrive late but are listed as a "Short connection" this means you can use the "Short Connection Lane" at passport control. But if it all goes 'tits up' KLM pick up the tab. On most days, most people (overall very late 90%'s) make their connections otherwise KLM wouldn't exist.