A833 questions

There is no order to the brass rings except as I noted in my post.
If your trans was not slipping out if gear on deceleration, and if you did not have to hold it in any gear for to keep it from popping out, then I would reuse the synchronizers. Judging by the looks of your brass, the synchronizers should be tip-top.
Ima guessing your Dart has a slanty or a lo-performance engine, and Ima also guessing that you're not into speed shifting; and so, if I'm right, then the condition of the points on the clutching teeth are not a big deal. If it was my trans, I might touch them up because I have the tools, the experience, and the time. But for a lo-performance streeter, it is of no great importance for them to have to look like new.