I love Arraez, but that's the kind of power you won't get with him. If Schoop can keep hitting the ball hard and not strikeout as much I think he should get a good share of 2nd base time.
I would like to see Sano get more reps at first. He's an upgrade over Cron offensively and it would allow Arraez or Gonzo to play 3rd while keeping the main outfield of Rosario, Buxton, and Kepler in tact.