I do not understand how you can believe that God foreknew everything, Created everything, but the future is not predestined to unfold as God knew and created it to unfold. Perhaps it is just perception, or more likely that I'm just not the sharpest tool in the box.
Do you believe that God knew, before God created the world, the outcome of contingent events (like who would and would not believe, for example)? If not, then perhaps that is where I am not following (many believe God knew all that is to be known, but our decisions are unknown prior to us making them).
There is also the possibility that we believe the same thing (on this point) but are speaking about this differently. I just want to make sure we are not talking past one another.