When you find the magic formula, please let us all know.

I don't mean to be a prick. You can use available tools to determine theoretically correct pushing and calling ranges given stack sizes, blinds, payout structure, etc. But, only experience is going to tell you how real players deviate from the correct ranges. And, as I am discovering (much to my dismay), it's not nearly good enough to generalize for a buy-in level -- you really need to watch and see how individual players are playing. It would be a whole lot easier if the generalizations were enough.