Technically... we were chosen in Him before the foundations of the world. (Ephesians 1:4)
God's omniscience enables God alone to know such a thing.
That does not mean God chose us to believe.
But, rather. Chose us because He knew we would believe.
Why, "chosen in Him?"
Well?
Where was Eve before Adam was placed into a deep sleep?
The woman was?
"In Adam."
We are now "in Christ."
For we were chosen to be the Bride of Christ.
You just contradicted yourself. Since God must peer into the future to learn the choices and acts of men, then He cannot be omnisicient, since He must acquire knowledge in temporal reality as any of us mere mortals do. Genuine Omnisicience requires that God knows all things instantaneously, simultaneously and infintely. God's knowledge is not limited and He is never informed by his finite creation.
Plus you have have zero biblical proof that God learns or acquires knowledge as we mere finite mortals do.