It also requires that "the use of force other than deadly force to protect or recover the land or property would expose the actor or another to a substantial ri

It also requires that "the use of force other than deadly force to protect or recover the land or property would expose the actor or another to a substantial risk of death or serious bodily injury." So not only must deadly force be the only option to keep the property, but you've got to believe that if you tried something other than deadly force you'd be seriously injured or killed.