The gospel writers wrote that Christ Himself feared the uncertainty.
Please state the specific text.
But also, you seem to be not taking into account an important distinction.
Jesus before the incarnation (where Ellen White talks of Him leaving heaven and risking by undertaking the plan) would have a different perspective than Jesus post incarnation.
If Jesus grew in knowledge and stature with God and man, and if He did not know the date of His second coming but only the Father did, then it is clear that one of the aspects He gave up was omniscience while on earth.
You can't grow in knowledge if you already know it all. So no, Jesus would not know every move that was going to happen in His earthly life. So ECR's earlier objection to Jesus just fulfilling a script is not completely accurate either.
However, before the incarnation God would have known. And it is there she places Jesus taking on this risk, at the very time when it would be plain there was no risk to the ultimate goal--though there would be pain getting there.
Jesus while on earth perceived the prophecies, but still had to go out and do what was spoken of Him. And without a doubt that would be challenging.
But before the incarnation it was plain what would happen.
And it was plain by the prophecies that it would happen. Or else God did not really know the future.