In my experience, HN has been a bad place to solicit for users. The majority of users from HN will likely be "tire kickers." Sure, your traffic may spike, but that'll be about it. I also know I'm not the only person with this opinion, though I'm sure there are exceptions.
I would focus on your real market, not showing off to developers hoping they'll become your customers.
I don't have any experience with your question. And since no one has answered yet, you may be interested in some stories at: https://www.indiehackers.com
Click on the interviews link to see more specific stories about how people got started.
I would focus on your real market, not showing off to developers hoping they'll become your customers.