“If God knows what the future holds, then all our choices are already made, aren’t they? Free will must be an illusion.” (page 12)
I don't think it is like that. God is outside of time, he can see the future and the past at the same time. We don't know what the future holds as it hasn't happen for us, but when it does happen to us we work out what to do. From God's view he has already seen us do it, as past, present and future are all "now" for him. I don't see the connection between God knowing the future means that God is controlling it. God knowing our future doesn't remove our choice in the future, in the same way that God knows the presents and still we are free right now to do whatever.
God's personality is later mentioned in the chapter (as well mentioning the teleological argument but I don't want this post to be any longer, so read the wiki article if you want):
“What sort of arrogance assumes God is like people?” he asked.
“Okay, I can accept the idea that God doesn’t have a personality exactly like people. Maybe we just assume God has a personality because it’s easier to talk about it that way. But the important point is that something had to create reality. It’s too well-designed to be an accident.”(page 15)
I think it is arrogant to assume God is like people if it is reducing God to being only as big or as powerful as people. But if we are to assume God is like a person in the same way that a spider is like a person (they are both alive, they have eyes, can move about, digest food, etc) but they are also very different in other areas (one is far more complicated, powerful, intelligent, etc) then in that sense it wouldn't seem so arrogant at all.
Also, assuming that God did create the universe, I think you would be hard pressed to remove a personality from God. Just the act of creation shows a personality, namely that it is creative and so also maybe imply a personality that is well planned, organised and intelligent.