The plan looks good. I'd also add that we want to address the most pressing usability issues such as superfluous warnings and oversensitivity to unknown content, but perhaps those improvements were implied.
As for the version, my vote is for 1.0.0. There's no perception that Awestruct has had a 1.0 release, so the jump to 1.6 would look perplexing. Let's just get to 3 version numbers so we can use them the way they're supposed to be used.