Swingers set up a "swing-back" motion, Hitters generally a "carry-back" motion all on Plane. Per 2-F, every Component of the Stroke must be adjusted to comply with the Plane. The question then becomes: which Plane?
Depending upon the Plane (7-6,10-6) you choose and any Plane Shifts or Variations (10-6) will require you to vary the Three Dimensional Back, Up and In.
While applying Extensor Action at Start Up the amount of Right Forearm Fanning and Right Forearm Pick-Up (as controlled by The Magic of the Right Forearm, per 7-3) as well as the Pivot have to all be balanced out to keep your motion on Plane all while under the direction of Educated Hands.