Looking for static site generator/CMS for multiple web servers

I bought Raspberry Pi and I want to use it as a web server for a simple blog. Also, I want to try implement load balancing somehow and create somewhere a mirrored version of my blog - in case the Raspberry fail or turn off, for example. I'm wondering which site generator will be good for something like this - I need something with easy post deployment. The possibility of installing graphic CMS will be nice, too. I'm thinking about Ghost or Hugo, but I'm not sure if these two are good choice.