First off, congrats because I like the simplicity and the design of your website so it looks like you made the first step. However, I'm not familiar with this niche though, maybe this is untap so once your project is exposed you don't need to promote it. But as of now, it will take a lot of efforts so you must go and search forums with similar niche and try to promote it their and see how it goes. Goodluck to you!!!.