@doyousee,
Your references to God sound like a scholastic or rationalist/empiricist account of God. Descartes, Leibniz, and Spinoza for example all have a conception of an "all perfect being" incorporated into their treatises, whether it be the
Meditations or the
Monadology. Referencing God as an "all perfect being" in most cases involving these philosophers is used primarily to ground their metaphysical ontology for the universe and reality. Descartes for example posits in his first mediation that he may be deceived by a malign genius (evil god) because God is an "all perfect being" and to deceive would contradict Gods nature.
I have not heard of the argument you mention, about God not interfering with the world because it would mean he would come along side himself etc. You may want to elaborate on who exactly said that. But that seems to be one of the true paradoxes of the ages. There was an old thread in the logic section called "can god create a rock even he cannot lift?"
Aristotle I think has a very viable solution, though he wasn't attempting to solve this paradox. He posited that substance was primary in the universe. But he also said that there were three types of substance, two sensible and one unmoved. A very long analysis of the sensible substances revealed that motion was a key element in the question. God then comes in as the unmoved mover, the essential element of all substance. Now this unmoved mover is the interesting part. Motion has to have a first cause? we think of it in terms of cause and effect. All substance is in the universe, but motion is a key feature of it all. God as the unmoved mover is introduced as that first cause.
Now personally, I think the notion of God should stop there. If God becomes entangled in the most minute of instances in the universe, God sways motion beyond the first cause. If you consider God as an all perfect being, if God were to interfere in any way with the universe, that means that the conception of the universe and the first cause had its flaws, and God would not be an all perfect being. But that's if we account for Aristotle's thoughts exclusively.