I think I'm going to have to change my phrasing a bit. Something can either exist in reality or exist in our imagination. The concept of God, for example, exists in our imagination. God, if he were to exist, would have to exist in reality. Something cannot exist both in reality and in imagination at the same time. So while the concept of God exists in our imagination, the concept of God does not exist in the real world. And while God may or may not exist in reality, he does not exist inside our imagination, only the concept of him does.
Your phrasing is not the issue; your logical consistency is.
You're using two distinct descriptions of existence in the very same argument. You're stating concepts can exist while simultaneously stating that they can't exist. You believe that by partitioning existence into "imaginary" and "reality" that you've somehow reconciled this inconsistency. You haven't. Because, you're still stating that one of the partitions does not exist even though it's a partition of existence.
I'm sure we would both agree that God does not follow the rules of our reality, for example he can create something out of nothing and has omniscience and omnipotence. Therefore, God cannot exist in our reality, because if God were to exist he would break the rules of that reality. So, that means God does not exist
This is the most logically fallacious argument I've seen thus far. "The rules" of that reality don't exist because the concepts on which they're based are not of that reality, according to your rationale. And once again, stay focused. We're not arguing totum pro parte and parsing through aspects. We are discussing existence.
Therefore, only the concept of God exists, and that concept exists only in our imagination. Does this sound logical to you, or no?
No. Because it's not logical at all. You believe you've made a distinction between the "concept of God" and "God." Everything you perceive in your experience is subject to your thoughts, even the "reality" you claim exists outside of it. Even your physical senses are rationalized through your thoughts. How do you discern the differences between vision, audition, gustation, olfaction, and somatosensation without your thoughts? How do you know they even exist? You can cite brain scans, but even then, processing that information must be subject to thought. How are "the rules of reality" determined without thought? Let me guess, you read someone's thoughts about how reality works (a concept) and believed them. They were able to delineate information using science (a concept) and reason (another concept) in a manner which you value (yet another concept.) You think that you've created a substantial distinction by creating these partitions. Rather, in "reality," you've only proposed, as I already told keithprosser, an epistemological insignificance. Your mind is chief in reality.