Options/ set up

[Rebel Yell]

Is there a particular way to set up the game in options that make the game more realistically accurate. Such as I know Historical attrition give the forces on the ground a harder time, what other settigs should I go for?

Changing the Delayed commitment how long a delay for strategy ratings should I set it at, and does that give the AI an advantage or does that effect both human and AI players?

Thanks I'm slightly confused