If God knows the outcome of our free-will choices, the results of these choices and all the ramifications and subsequent choices involved, and we cannot do any different...then where is the choice?...He has already pre-planned it.
God knew what Hitler was going to do, yet He still created Hitler, didn't He?
There is no way anyone can show, that they could have made a different choice.
You are trying to put God's foreknowledge into human constraints. God doesn't pre-plan what man will do, He simply knows the outcomes of out decisions. Therefore, man does have a choice. God knows which choice you and I will make, but we still are the ones making the choice.