I think I am sold on putting the post on the supporting joists and laying the 5/4 decking around it. I would like cedar posts but am concerned about rot. I could use green post and wrap in cedar as shown in the article. But the post would become much larger which could cause some other challenges.
One other option I have considered is using some kind of a support base that raise the post to help keep the end dry which I believe is required on concrete.
Would a post support be a good option to look at?