Justifying a two year gap after Master's degree in Statement of Purpose
You can mention all three.  The trick is to make these parts of your CV look like "features," not "bugs." It sounds like you have an idea of what to do there. I don't think it would hurt to mention that this slight detour, while being slightly off the path to graduate school, has only convinced you that graduate school was the right place for you.

Of course, no one ever got into a good program by saying "I really want to be there!" I was in a similar situation when applying to PhD programs -- I was teaching high school, which was good, but my background was not directly inline with what some PhD programs were looking for. I emailed some faculty about what to do to bolster my application, and one suggestion was to go ahead and do some academic writing on my own and use that as part of my application.  I'm not sure if that's possible for you, but it's something to consider. If that work is high quality, shows that you are up-to-date on the state of your field, and actively thinking about workable research topics, that will surely impress admissions committees.