Probably for the best. The last thing you want is a router unexpectedly kicking back and damaging your project. Even one of our most esteemed BC builders doesn’t like using his router for this reason and is a hog it out and chisel man. The only ‘problem’ with a bit and brace (lovely looking thing though) is keeping it straight, but for such a shallow job, you should be fine, especially as you’re comfortable with this tool.