Naruto: What is the Real Uchiha Madara's original plan?

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In Naruto 559 page 2, it's obvious that Madara was expecting to be resurrected but not by the Impure World Resurrection Jutsu of Kabuto Yakushi. He said "It would appear that little Nagato managed to grow..." With this, we can say that he has a plan that sooner or later he'll be fully resurrected by the Rinnegan of Nagato. However, upon finding out that it was Kabuto's jutsu that brought him back, he was a little bit of shocked, right? So now, who has any theory about Uchiha Madara's original plan? Please share it to me. I'm on a dead end here.