Again, you are missing the IN CHRIST part.
By way of analogy, consider Noah's ark. The wickedness of men was great in those days, and God, in his foreknowledge, was not caught unaware of the same. Instead, he foreknew, from before the foundation of the world, that it would eventually be so. At that time, God's Spirit was not only striving with men, but we also know that Noah was a preacher of righteousness. In other words, God was actively seeking, via his Spirit and the preaching of righteousness, to save everybody. Furthermore, God provided a "chosen" or "elected" means of escape, which he foreknew from before the foundation of the world, or he chose Noah's Ark. In his foreknowledge, he knew who would favorably respond to the promptings of his Spirit and the preaching of righteousness, and he also foreknew who would unfavorably reject the same, but he still genuinely strove with everybody. Those who got on the Ark did so of their own freewill choices, and those who did not board the Ark chose not to of their own freewill choices. With these things in mind, we could rightfully say that God foreknew who was going to be found "in the Ark" before the foundation of the world, and, similarly, God foreknew who was going to be found IN CHRIST before the foundation of the world. This does not mean that God chose who was going to be in either the Ark or Christ, but simply that he foreknew who would be.
I honestly cannot believe that we even have to have such a discussion. Can I tell you, plainly, what this whole discussion reminds me of?
Before I got saved, I spent some time at the racetrack. One night, a man placed a $100 bill on the floor with a hidden invisible wire attached to it. He then stood there for about an hour while sadistically and gleefully watching people bend over hastily to grab the $100 dollar bill, only to have it snatched away from their grasp at the last second. I actually saw one man go for it with such fervor that he did a somersault on his head before crashing his body onto the floor as the $100 bill was snatched away from his outreaching grasp at the last second.
This is Calvin's "god."
He puts the gift of salvation before certain unsaved people via the preaching of the gospel, and then he sadistically and gleefully pulls it away from their grasp because they never really had a chance to lay hold of it. Calvin's "god" is not the God of the Bible, and he is certainly not my "god." I REPUDIATE Calvin's "god" with every fiber of my being.