Definitely seem like the "average size guy". I would also tell you to have your undersuit/shirt on when fitting as well. I know it doesn't seem like it would make a difference but it will. Honestly, looking at that second pic with your hand pointing up it looks like you have tons of room. I am a bigger guy and went bigger on the cover strips (not much 15mm to 18mm) and spaced the ridges a little further out both on the biceps and forearms. I did trim everthing prior to sizing and regretted it afterward on the biceps and forearms. Looks to me like you don't have anything to worry about. March on trooper!