My fave professor said "all-powerful" could be construed "All the power that is, is God's". Then such power as anything else might have, if any, would have been delegated or handed over. Our Calvinist brethren seem to be doing an pretty exhaustive job of looking at that.
Similarly with "all-knowing". And this leaves the questions about the future and making a rock so big He can't life it to other parts of the conversation.
So God is ALL powerful, and if he ceded his power to another He has stopped being ALL powerful.
Similarly with "all-knowing".
You have God violating His nature all over the place . When God knows no more than man, he ceases to be omniscient and becomes as limited as his creatures. Prophecy becomes a lottery guess.
And this leaves the questions about the future and making a rock so big He can't life it to other parts of the conversation.
That is only a conversation if one believes God can stop being God. If God could not life the rock he would stop being God.
Does God have free will?