To meet certification, all aircrafts must at least fulfill these limits:
360ft/min at MTOW and
600ft/min at MLW
Source: Certification Specifications 25, §473 "Landing load conditions and assumptions"
Just use the stabilizer trim switch (which should be assigned to your joystick). This will disconnect the A/P. You will still have to silence the horn then (which can be done by clicking on the annunciation even in "captain view".