Are you denying omniscience? If God doesn't know one's final choices, that might be because one asserts that the future is logically unknowable--ala open theism. If God simply doesn't know, but not for reasons of open theism, then he simply is not omniscient.
So how do you see it?
I've never been able to understand exactly what open theists are saying. I came by my position via my own thought process, and so wasn't influenced by open theists. All I know is it blew up into a major evangelical controversy resulting in the evangelical version of excommunication. I tried to read the literature on it, and my conclusion from that reading was that one side was saying "gkghkj gkgkjoty blughl" and the other side was saying "qweqwer utionsgtr bvdafar". In the end, given the major differences between the Reformed theology of evangelicals and my own Lutheran Confessionalism, we already have a lot of other things to argue about.
Bottom line: whether my views are the same as open theism or not, I really don't care.
I don't see any reason to defend knowledge of the impossible. I don't see anything in the Bible that indicates God acts willy-nilly, making it up as he goes along. As best I can tell, God has created a world for us and only interacts with us within the rules of that world.
I don't see anything that convinces me the future exists. I don't know of any reason to suppose it is possible to know that which does not exist.
With that said, God has maximal knowledge and power. He knows everything that can be known and can do everything that can be done. So if God says, "Christ will come," he has the power to make that happen, and in that sense alone he knows the future. He could do the same with any and all places, peoples, and things that exist. However, again, as far as I know he doesn't.
The last piece though, is that his maximal knowledge would include knowledge of every possible thing I might do, and every possible consequence of that action for every place, person, and thing. What I might do, however, is different from what I actually do.
So, that's my view. Classify it as you please.