Get the rear OME HD springs And the F150 Monroe load levellers and remove the lift spacer. That'll keep the rear end up, add flex and properly limit the suspension travel.

The problem with the stock springs is they're so soft that you have a lower effective ground clearance due to how much they'll compress while off-road. The increased spring rate of the OME helps maintain the added ground clearance as the vehicle is bouncing around or dropping off rocks.