One thing I should mention is that, at the moment, Couch mode only supports controller, however we plan to add mouse and keyboard support to this mode as well (mouse and keyboard is already supported in Online mode and you can choose to just play bots there as well, but if your internet is bad, you may experience lag or disconnects). But yes, as babiierika said, the bots will definitely be a challenge for you and you can customize their difficulty!
Hope that helps!
Brett