I'm really curious about the niche you're targeting.

Let me try to figure it out: people that can code a static page and use a static generator (know markup languages, maybe tempting languages, can use the command line) and people who can't use an FTP app and haven't heard of Git/Github pages.

How big is the intersection of these sets of people? I would be surprised if it's more than a handful.

I'm not trying to sound pessimistic ... I would be happy, in fact, to know that I'm wrong. So, if I may ask ... do you have more than 0 customers?