Actually, I've generally not seen more than 1-2 degrees of either in most planes.

Down and right thrust is a guessing game, and a matter of personal taste. You add or remove down/right thrust until the plane flies the way you think it should fly.

There should be no problems controlling the plane. In typical cases, the plane will simply have a tendency to climb under power, and a much less pronounced tendency to roll to the left under the same power.