I like one_raven's reply. It is quite possible that a decision can't be "known" until it has been made, because before then there's simply nothing to know! But if you take point 2 to its conclusion, it means God knows everything there
is to know, including your character, your thoughts and intentions - all the variables. And of course, He can also know when He will act himself (prophecy, anyone?).
A practical example: God knows that on your present course you will fall off a cliff. In fact, you are on an island surrounded by steep cliffs. So He warns you of the consequences of this path
you have chosen. He also tells you that He can protect you from falling, because He means to use you on the mainland. If you reject His warning, you fall without Him. If you heed His warning but reject Him, you're stuck (you're probably quite happy being stuck anyway, but you'll never see the mainland God intended you to see).
Another example would be evil. God knows evil because it's there to know, but His nature doesn't allow Him to tolerate it - let's call it "perfect and complete self-control". God created us to be like Him, therefore with the option to know good and evil, but He didn't create us evil, or
for evil. He knew that sin would lead to our death (spiritually, but that almost synonymous with physically). He could also predict that we're not able to handle it because
we're not God, we're finite, and that's why He warned Adam of the consequences of disobedience. But when Adam sinned, instead of letting Adam die, He moved them out of His presence to where sin could do it's worst and where they could live out their lives - because God knew He would forgive sin, and that it's result, death, was no match for Him. So He maintained a relationship with those who would walk with Him, because through them, everybody could come to know Him and be saved. I could go on, but I'm sure you get the idea...
God could predict all of those outcomes. Your fate
is in a sense "predetermined"; how many people's "fate" was it to live out their entire lives on earth? You were "determined" to live on earth because you were born here. But when other options become available, your choices changes, and your possible future changes. Once again, God knows where you will end up because He knows what choices are available to you. He doesn't choose for you, though.
You're free, and at the same time you're not. That's life. You can live like you choose, but I predict you will die on earth
. God wants you to live with Him so He can show you where the dangers are, and because death is a chasm He does not want you to end up in forever.