Calvinists actually do understand what you're talking about. Most of us had these discussions in junior high.
And although you protest, your postulate is exactly like God creating a rock too big for Him to lift. So what? It's simply a word-game trying to get around God's authority.
The over-arching truth of all existence is that God, whether He inhabits past, present, future or a bunny suit, is aware of and omnipresent over every nano-second we live because it is ALL His creation, according to His will, as He determines because it pleasures Him and brings glory to His name.
You fail to see that all your posturings come down to you wanting to effect God's plan. You want Him to respond to you. It's an understandable mistake; Eve made it, too. And so you want the concept of time to bend to your will; to make time mallable in your hands so that God can actually change time and events according to your actions.
While time may well bend, it does so as God instructs. And that instruction has been known to God from before time.
Bottom line -- God knows your questions. He gave them to you. He watches as you struggle with them, and I pray He gives you insight.
I've long notice in the absence of any Biblical teaching on "Free-Will" that Arminians simply appeal to a philosophical heremeutic that re-interprets Biblical teachings such that they agree with their philosphical concept of "Free-Will".
We see this with Romans 8:29 where the object of God's foreknowledge is not "people" like the text claims but the "actions" of people -or to interpret "predestination" as simply God's "pre-determination" as to a means of salvation as Gramm's commentary shows. i.e. -if it doesn't fit the "holy grail" of "Free-Will" it must need to be re-interpreted such that it does.
The height of this is found in the desire to be consistent in Arminianism as we see with the "Opennes" theology.
This, I think, explains the comfort and openness of the Arminians here on FR to play around with these philosophical speculations.
xzins did it a while ago with the "openness" issue -something the Calvinists immediately knew stunk to high heaven.
Marlowe tried it with his postulations that since God "forgets" our sins that they never really happened as well as his current speculation on how God's eternal nature works in time.
Calvinists, on the other hand, have never utlized naturalistic philosophy as a hermeneutical tool to interperet the Scriptures.
Sola Scriptura!
Jean