It can do yea, but they wouldn't be as emotionally involved by playing against them for the first time as Ross, especially the way things are, this game matters. This will be the biggest game of his career by far, something he'll have dreamt about.
I'd be more concerned about him keeping the head, not doing something rash, or trying too hard running about mad.
But he seems quite grounded.
All in all, i'd definitely start him. If it's not happening for him for whatever reason, can sub him. But he's a starter for me.