These are all good skills to be proficient on day one. What I don't see listed that I would prioritize above some of these (because every environment is differ

These are all good skills to be proficient on day one. What I don't see listed that I would prioritize above some of these (because every environment is different so skills are sometimes different) is testing discipline. Have you written a unit test before? Can you write testable code? That is a much harder set of concepts to understand and would likely take awhile. Make sure what you put up is tested - that would separate you quite a bit.