A/C Stall when first starting - what could be wrong?

My best guess is that with a long period of non-use the compressor motor lubricant congeals just enough to prevent an initial COLD start.

Puzzlement... You seem to be saying that the blower motor also shuts down when the compressor motor attempts that initial cold start,...True?

Then I would suspect a poor/marginal electrical connection, start with the CB.