I'm still knee deep in adding features, but another side-passion of mine is writing. I used to blog a lot and ended up selling those sites years ago.
Do you find spending time blogging useful for driving in new users? I would probably blog at blog.site.com vs. somewhere else, like Medium, but does that really matter?
If it's a passion give it a whirl. It doesn't sound like it could harm. Do report back on what you find.
Spent the last day building out the blog for the site. I ended up going with site.com/blog format instead, so that the main domain gets any link building benefits.
Have something ready to throw up this next week...ended up using Contentful for the data management.