Let's pretend that I've unhooked or switched a couple wires around in the past. Our engines aren't the smoothest missing two cylinders. Maybe there's a way to balance that out based on which cylinders you disable. Where's the engineers to tell us which ones. I'm not confident that 3 cylinders will be enough power and smooth enough. I'm ready to see you try and help where possible though.
Also keeping in mind that as each cylinder hits, it contributes to the rotation, so maybe disabling every other cylinder that fires is the way that will work the best.