Did you miss that before Omega gave you the offer, you already had "the ability to emulate every possible universe of the complexity of the one we observe, and then some"?

No, but I evidently forgot it by the time I tacked on the 'offering to make me a God' drivel. Nevertheless, as with (I believe it was) Pys-Kosh my intuition tells me to take the deals and fast, before Omega changes his mind.