Excellent effort on the product! I had the similar idea for a long time as well, and I use Evernote to do all my blogging, then built a custom process to pull content from Evernote and create a static website using Jekyll. And I wouldn't use another platform just for blogging, the whole reason for me using Evernote is that all my notes are inside of Evernote and it's a perfect single place of truth for everything.