Hi , hope you're doing well! Matthew asked me to take a look at the post. I really like the idea, and I think you have the basics down perfectly. I'm wondering if we can add a bit more of a human interest angle to it, though? Maybe interview a few editors who've worked on it over time, or the ones who brought it to FA status? Why were they motivated to achieve a FA for it? What challenges did they face along the way? It could be something like the Signposts's WikiProject report where you interview a few editors who've contributed to the article.
Another suggestion would be to talk more about some stats. How many edits has the article had, page views over the last year or two, editor discussion in all the talk pages, etc. Something to make it more real and make our blog audience (who is mostly not editors) understand what a very cool achievement this is. 
Let me know if you have any questions!   (talk)