Given the propensity for the court system to override a living will, I'd recommend adding a clause to your regular will stating that "if the terms of my living will are not followed to the letter, regardless of reason, then every damn penny of my estate goes to the moonies" or something to that effect. With fond memories of WKRP.
Never sign a "Living" Will! It can be your death sentence. Instead, get a Will to Live from the National Right to Life committee website.