The top-end rebuild, new-used starter, and new alturbonator did the trick! The car now moves on it’s own power 100%!! Took it around the block for a mile, it was surreal.
The transmission is unforgiving with it’s probably worn synchros...So I’m hoping a fluid change Friday morning will alleviate it (i.e. prevent me from doing a rebuild for as long as possible) before the first legitimate road test!