Which stack to use for blogging site?

Hey everyone, I have decided to make a blogging site for me. I have decided to use Gridsome for that purpose as I am a vue fan.

Now, I wanted your suggestions on what should I use for managing the content, tags etc.

I have thought of two options

• Use yaml, markdown for the content.
• Use a CMS for that like contentful.

For what should I go for and why?