Sure and I totally see your point. But in the instance of Joseph giving the plates to Oliver. He had multiple choices each with there own series of outcomes. For instance: Give the manuscript to Oliver - and we saw what happened. Don't give the manuscript to Oliver which would have deviated down another path. Tell Oliver he's being replaced as scribe and get lost - yet another path. Do you see what I mean? Joseph could have chose to do any of these or other options, each with their own set of time lined events. So while I know God is infinite living beyond the scope of time as we know it, he does see all of this - these different time lines that are based upon the choices we make.
Your example of Judas is a good one too. Judas had a lot of choices to make, betray, don't betray, just leave town - each of these choices have significantly different outcomes.
So does Heavenly Father know the choices we'll make, or does he just plan for the worst case scenario as the example of the lost manuscript and ensure other accommodations are made for that eventuality.
I mean I could decided to walk out to my car right now and drive 18 hours to my moms house in Ohio or I could stay at work, keep my job and continue supporting my family. Each of these choices have significantly different outcomes and the ability to change the outcome of my life and the lives of my loved ones.
To say that Heavenly Father knows the choice I'll make before I make it speaks to me that my destination in this life (Telestial, Terrestial or Celestial) is already determined and judgment day isn't even here yet!