Since your making a dual AP approach you are aiming for an autoland.
Not really true, depending on SOPs. For example we do every ILS/GLS as dual channel approach, even if we plan to disconnect the autopilot later on for a normal manual landing. It is just a longstanding (>20 years on 737s) SOP which does prevent single channel aileron hardovers. However, disconnecting the AP is easier done with the normal switch instead of overpowering it, never really tried to wrestle with the autopilot on short final, there are better situations for that.