[Loren]

the blue line that you have drawn, is that the turned shoulder plane?

Is the goal to get the shaft, hands, right forearm, and right shoulder all on the the turned shoulder plane at impact?

Yes, that is correct. And the #3 pressure point, the proximal phalanx of the right index finger.
Note the right forearm is a little under the line. Seems to me he's a bit too squared away for impact.