I guess another approach would be to create Custom Page types that either inherits or is a cloned version of the blog & blog posts page types.
This is something that could work for your requirements.
Just something to remember is that going down the custom route would mean you would loose default Blog functionality that Kentico have introduced into the CMS as standard, but I think if you just want a Blog listing page and post pages, without the months, then you should be fine.
Also the other approach is to use what Brenden has suggested :)