I don't know about the rest, but I like to keep the focus passing to mixed... but as for width, it depends on the field I'm playing @. With the players I have(and team, Im playing Man Utd), I usually play wider(full bar) when the field is wide(you can know this when the scout for the next opposition comes back with his reports or you can see it from the stadium/facilities on their info tab) and narrow it a little when the field is narrow.