You can consider your god to be maximal, or optimal, if you like. Neither of the options get you out of the problem that you are simply trying to define the god into existence. If we had access to the god, couldn't we just ask him if he is optimal or maximal?
Also, on a completely unrelated note, waiting for a mod to approve posts is a royal pain. Yea I understand the reasons for such a requirement on a forum like this.