The real problem with any SSG is where to host and edit Markdown files and images for flexible spur of the moment content creation. I've built my own Wordpress-export-to-static solution to use the native iOS App as a workaround but it feels somewhat clunky — Same with having to run a headless CMS for this in the background; Surprisingly with all the gazillion of MD editors, no one has ever built one with live editing…
lektor offers some of this functionality. editing is done locally through a browser UI, but there may be a way to host the interface. deployments are easy.