Can you give the link to your next post. Because this post still not conviced me.
I think CDN not helps very much here. You can go next step using one static server use NGINX before think about CDN, CDN only help when your user is distributed world-wide, or you dont know much about how to service static files in a right manner.
Config a static service which NGINX even less headache than CDN config. Just my two cents.