Sometimes people worry that a post idea might be missing some obvious, core insight, or just replicating some other writing you haven’t come across. I think this is mainly a problem only inasmuch as it could’ve been more efficient for you to learn things than slowly craft a post.
So if you can write (a rough version of) the post quickly, you could just do that.
Or you could ask around or make a quick Question post to outline the basic idea and ask if anyone knows of relevant things you should read.
One other semi-relevant thing from my post Notes on EA-related research, writing, testing fit, learning, and the Forum: