Hello, I am 5ft9 with a medium size bike. I have had a bike fit done and this fits me perfectly. I would say that the size M/L is perfect for you as I am debating whether or not to get a 10mm longer stem myself as I prefer to be in a more aero position. I would also add, don’t compare how you look on a bike to how other people look as people’s positions and geometry are all different. I hope that helps.
