R. 6:86-2(a) directs that, in addition to the complaint, the plaintiff must file an affidavit regarding all real estate in which the alleged incapacitated person has, or may have, a present or future interest; and the personal estate he or she will or probably may become entitled to, including assets and income. The rule requires the plaintiff to provide “as much information as can be secured in the exercise of reasonable diligence;” if the financial information is unavailable to the plaintiff, an explanation must be provided.