Hey @D0LBA3B 
I’d recommend taking a look at the custom routing, specifically the use of the IVirtualPageController. Implementing a RenderController will rely on the content finder to kick in, but the IVirtualPageController takes care of this within the controller itself.
Check out Custom MVC Routes | Umbraco CMS
I’m presuming that in the FindContentfunction you’ll likely want to put the blog home or something so you can still grab ahold of bits and pieces (like nav / footer) and then fetch your data in the actual controller action.