The only time I have had trouble with ghosting was using the internal HDR and taking pictures of my son on his bike (I forgot it was in HDR - great piloting practice by the way, trying to track a 6yo on a bike). As far as HDR goes the internal is pretty weak (maybe -0.3, +0.3?) and there are no adjustments possible.
Option #2 is the 5AEB which takes 5 rapid (250ms for all 5, acccording to my digital stopwatch test pictures) at a bracketing of 0, -0.3, +0.3, -0.7, +0.7, which gives you a 1.4EV spread which is workable.
Option #3, only possible because the P3 is so insanely stable, is manual mode. Take a photo at 0EV, use the wheel on the remote to adjust down to -2EV, take a picture, adjust up to +2EV, take a picture. Post process in Lightroom or HDR software of your choice.
Example of a manual -2, 0, +2 manual HDR (lightroom):