For where if an agent has structure, and parts have capacity to freely decide, then there would be conflict in decision therefore the agent is not free
Well, further then that, it would result in an infinite regress. For we could just extent the question of “where does the freedom of this thing come from” to the parts too - if they have capacity to freely decide. And therefore we would fall into an infinite series of structures, all having freedom of choice, but never having the explanation of the origin for such freedom of choice.
Therefore, it must be of two ways. Either the parts do not posess freedom of choice, yet from such things freedom of choice does stem, or a multitude of parts is not the explanation for such freedom, but rather something which pocesses freedom in itself. Now the former does not seem reasonable, for it does not seems as if what is purely of a given form can produce the opposite form even in the multitude. Thus, we must accept that freedom of choice must truly be something without smaller entities within itself for explanation of said freedom of choice (what I presume you call “a thing noncomposite”). Therefore, you must be correct in that freedom cannot come from what is “composed” (I’m generally careful to use a word like that, for composition is still held in such a thing even as simple as this. For only pure act can be supremely and totally simple).
Well, that being established, why must it follow that something devoid of parts in this manner cannot be created?
even God is eternally conscious of things which this, consciousness, is not a thing but a property
Well, actually, I don’t think many would agree with you on that, including myself. For God, if defined as pure actuality, does not hold properties or accidents, but instead, only the essence of act. The idea goes that God’s consciousness is simply God, along with his goodness and love; they are not parts of God, nor divisible in him. He simply is these things, and these things simply are him.
The thing always acts based on its nature if it is not free otherwise it can do against its nature.
I would rather say that a being not free is one completely restrained to act, whilst a free one is one that is at least partially unrestrained in ability to act.