I have used 1120mm a few times (on a FF body) for moon shots and the sensor coverage is quite good, without being so large in the frame that earths rotation becomes frustrating (otherwise you need to continually adjust the tripod head between shots). In my case it's an adapted Canon 400mm F/5.6 lens with stacked 1.4x and 2x teleconverters. So I believe that another good choice would be the Sony 200-600 with a 2x TC.
And as already stated by somebody else, these are not typically worth buying just for moon photos due to their price.
And as already stated by somebody else, these are not typically worth buying just for moon photos due to their price.