Why limit your audience to “FIRE” or people who can spell Epiphany without spellcheck? You need an easy name that will elicit an emotional response (I.e. KeepYourPaycheck) and that tells them what you’re doing for them.
Tax Epiphany sounds like you’ve figured something out that has always been there, which I guess is the case but isn’t a compelling name at all. If you JUST figured this out, why would we trust you? You need to convey authority or experience, not a “I just had this idea so I’m going to start a blog!” vibe.
The other one I literally forgot while I was writing this response on mobile and I’m not going to even bother saving this post as a draft to look it up. It’s forgettable, I’ve forgotten it, you won’t get a second hit on the website with it from most people.