God can be wholly good, omnipotent, omniscient, and make it the case that there is huge amounts of evil
But why would a good God do that?
No offense, but you seem to not understand what ontologicalme meant. If God is able to do the logically impossible, then He can create a world full of evil(evil only, no good at all), but yet remain wholly-good. Because then logical contradictions don't exist for Him.
You might say - but He's a good God, why would He do such a thing ; well, our essential nature is limited by logic, but it no longer holds for God, if He's omnipotent in the absolute sense. See, I can't be a good person and a bad person at the same time, because it's a contradiction and it seems to me that this world obeys logic. But God can be wholly-good and will such a thing, because He's not bound to logic, so you can't really call Him out on His bullshit, you know. As I've said in other threads on this topic - things get really nasty if we declare God omnipotent in the absolute sense. We just can't sepak meaningfully about Him any longer.
I'd dare to ask, prolly one of the most important questions in this case(at least to me), what keeps God what He is, if there's no logic? There must be something that makes Him what He is, otherwise He could change at wish, He could create a more powerful God(yes, it doesn't make sense to us, because God is already described as the most powerful entity in existence, but remember - He can do the logically impossible, so He can create a more powerful God).
What is sustaining God in this case? We are what we are, because of what logic necessitates, but what about God?