simple
I made both the left and right top buttons the same: autopilot disconnect. If one choses to make them different functions, I would make sure the two functions don't cause problems if they are confused; this is why I made them the same function.
So AP disconnect and go around may be a problem since if you hit the wrong button, you will get a surprise. I chose not to put go around on the stick but rather the panel. because if I am going around with a button push, then I have auto pilot engaged and I don't want to be touching the stick. JMHO. YMMV