I consider myself skilled in social media content creation, therefore I think the best way to market this would be via platforms like tiktok, youtube etc. Especially on the specific productivity nichés on those platforms, generally the people who watch those video's aren't very tech literate and will probably consider looks into their decision of productivity app, however I don't think it will be close the sole reason.
I would describe the app as a "jarvis" like dashboard, with widgets, a kanban board, note taking & storing capabilities with the interactivity and obsidian.md
I think I might stick to your idea of acquiring a few users first especially because this is my first big project.