we usually perform experiments to learn something where we don't know the outcome. But God is omniscient
From the available evidence, I've concluded that God is likely not omniscient about future events.
It doesn't make sense that you ascribe the property of omniscience, with such certainty, to an entity that you don't even believe exists. Therefore, your lengthy post is fundamentally flawed nearly from the beginning.
then he could sit there blaming the lifeforms that emerge for being precisely what the dice he used plus the ruleset he used produced
So you believe we don't have free will; that we're merely biological billiard balls, inevitably careening down whatever path was determined by the Initial Conditions? That's depressing and demotivating.
More later, perhaps.