[6bmike]

will it move early in the swing or late in the back swing?

The right forearm is moving the hands, so it would be early. The left shoulder is NOT pushing the hands away in a so-called one piece take-away.

It is important to focus on the right hand- pp3- is it traces the plane line on the ground. The right elbow will fold naturally.

Althought the right hand -pp3- traces the straight plane line running linear along the ground, examination will show you that the hands- Flying Wedges- are moving out-up and in along the inclined swing plane. The Magic of the Right Forearm.