On the nature of God

m sure people smarter than I have thought this before and probably even book written about this. So if you have any insight on this please feel free to correct me.

I have the notion that God is omni-present and only exist from the present, to the past. The idea of his knowing the future is not possible since this will negate the need for free-will. I cannot pretend to understand God, but why create humanity if you already know how it is all going to end? Doesn't that mean you are already pre-destined to your actions and God is fully aware of your actions and outcomes? 
Therefore I submit that he does not know how you will make use of your free will. He can make very predictions based on all information from the past and moves things to influence your choices but cannot know how you will choose.