God's Plan?

I have a theory that when God made the angels it was his first pass at the idea of having fellowship with other beings.  He gave them free will and eternally immortal bodies.  The fellowship thing was going pretty good for a while until a few of them decided they wanted to be in charge.  Satan led them in revolt against God.  So after God tosses them on their ears and they get to rule earth, He creates mankind for his fellowship.  However, learning from the experience of giving eternal life to Angels who didn't all want to be in fellowship with God, He makes Mankind of limited life span with an expiration date--with the option to do a one-time offer of extension upon death.  That offer of extension was contingent upon proving oneself a faithful child of God, believing in his Goodness and promises.  God figures if they can hold up to that in relatively blind faith under the stressful and tempting conditions of a fleshly existence on earth, they just might be good for eternal fellowship in Heaven with Him.  He attempts to get them to sign on the dotted line, and not surprisingly most of the humans decline the offer.  So it proves up his plan to select only the ones that will be in eternal fellowship with Him gladly.  

Having said that, I have implied that an all knowing and all powerful God made a mistake when He created the angels.  But if He did it knowingly, He apparently had a reason for a better outcome.  I’d be curious to hear your thoughts.