u/Ashamed-Mouse6216

So, a while back, I got an Acoustic B450 mkII, and it's been treating me well, and I think it sounds pretty good for what it is. On the back, it has 2 outputs for external speakers and I want to utilize one of them, just for fun (and to collect more gear that I don't need). But, I don't know the minimum specs for an external cab, besides it being 2 ohms minimum. What should the minimum watts be and what cab would be okay to use? I know it's kind of a dumb question, I'm still trying to figure this stuff out. Any help is appreciated :)