Everything was meant to be from the beginning.
that is crazy talk.
God is willing that none should perish, yet they do.
God is not the author of evil. He never intended for sin to occur with man or demons or fallen angels or Satan.
God's plan was prepared in case sin did occur.
Christ's death was 1st that He would be faithful thru death and enter into His Glory,
2nd it would provide for the sin problem, should that become necessary. (as it did)
Without the sin problem Jesus was still destined for death as the means to prove his total allegiance to His father (as did Isaac) that He would then be exalted to His Fathers right hand.
God had a plan, It allowed for freewill to be free. God could modify His plan as needed to adjust to the actions of freewill. (it was not original plan to wander in the wilderness for 40yrs)
God is not incapable of dealing with and reacting to freewill.
God's Plan was in general predestined (with contingency's for interacting with freewill)
The individual is not predestined, they have freewill. neither Judas nor the coming antichrist was predestined to Hell. God just knows the heart of man and since sin has entered there will always be those who would fill the role.
A God who is acting in faith with our freewill is a God of LOVE.
A God Who predestined sin and hell and rape and murder would be sadistic.