I would prefer that God created the possibility of evil---actualized by a fallen angel...rather than incorporating the attributes of evil directly into a part of God
Creating the possibility is the equivalent of creating the actual thing itself if you are the ultimate creator of the universe. Creating the 'possibility' of something implies that this 'something' is attainable. In programming logic, if I create an 'if' 'else' statement, it implies that I am providing the mechanism for either option.
Having evil as an intrinsic part of Gods nature makes Him no better than us.
I don't necessarily think that the creation of evil implies it is intrinsic to anything or makes any statements pertaining to the nature of god or whatever.
Ironically, these paradoxes can actually be eliminated by simply removing the omnipotent nature of god. If god is not omnipotent, than god can be privy to the same potential issues that manifest in any entity that isn't all knowing or all seeing. I know Christians don't necessarily like that viewpoint, but it actually is easier to reconcile with the the stories of the Bible.