The problems with your argument are relatively small and inconsequential. (e.g: you snuck "omnibenevolent" in, without suitable introduction or attribution. Most religiouists would probably regard
God as omnibenevolent, so I understand your point despite the Democrat-like presentation style.) There are even better arguments against the existence of God, but so what? Yours is good enough-- and so what?
You have shown that the Christian/Muslim definition of God is not logical, but have not addressed the possibility that there is a Creator of the Universe who possesses more realistic attrributes.
For example, suppose that God thinks? If so, God cannot know everything, because even human thought involves the ability to invent new information-- impossible for an entity who already knows everything. A thinking God cannot also be omniscient.
The omnipotence property is useless to a real Creator of the Universe. If such a "God" were to apply infinite force to a single electron, the electron would instantly accelerate to the velocity of light. In doing so it would instantly acquire infinite mass, thereby creating an infinitely powerful gravitational field that would instandly suck the entire universe into it, destroying everything.
A realistic version of a Creator would not need either omnipotence or omniscience. He would only need to have acquired sentience and purpose. That Creator would act more like an engineer than a know-it-all, taking a few billion years to develop life on our planet (for example) because when he began the project he had no idea of exactly how to go about it.
A real Creator would be bound by the First and Third Laws of Thermodynamics.
A real Creator would not even be singular. If you were to interpret the evolution of critters as well as galaxies as an engineering process, the first observation you must make is that a lot of different engineers, with different design philosophies, have been involved.
So, although you have joined the parade of folks who can prove that the omnipotent, omniscient God of Christianity does not exist, have you disproved the concept that we live in a created universe?