leg room
I emphasize, I am a bit smaller than you but still quit tall - and how often do I see the little nice lady or young girl of 1.5m sitting at the emergencey exit while I am stuck in the normal seats. Business or Economy Plus (other names on different airlines) come to mind and are really nice if you either have the miles or the money... Otherwise - be early, nice, explain - that got me several times the emergency exit.