Your latest version is nice and not too different from the base class.
Since they have the option to use Wis or Str for unarmed attacks, I guess you can make a Str-based monk without ditching your AC. That's a nice feature. Going a little further down that road, do you think the class design can support (Str, Dex), (Wis, Dex), and (Str, Wis) monks to an equal degree, and make each choice feel significantly different?
For example, some traditional martial arts teach forms for 2-handed weapons. Maybe a Str monk can reach higher damage outputs at lower levels by wielding large weapons. Maybe the Wis monk gets more Focus points to play with.