I must admit, I'm certainly curious.
I see that you've taken Aquinas' lead and summarily equated the first one with the second one. With all due respect to Aquinas, Aristotle, and Kalam I'd be surprised if you could make a cogent argument for either.
"...equate the first one with the second one." What are you talking about? And, "a cogent argument for either" —either what? If God is God, he is omnipotent; therefore, First Cause. Definition. No need to prove. I simply refuse to call any other being "God" or to consider any other to be God. Superhumans —gods, perhaps— but not God.
The First Cause, as per metaphysical arguments, and a conscious Creator with free will, while not mutually exclusive, can't possibly be one and the same thing.
I should think that would depend on what "free will" means, there.
The good old "Men freely will what God wills them to will." argument. Hardly convincing, and a tad hypocritical. After all we could make the exact same argument for God, "God freely wills what the First Cause wills Him to will."
You repeatedly seem to assume that God and First Cause are not necessarily the same thing. I'm sorry, but God is not God, if he is not First Cause.
In other words the First Cause establishes the illusion of choice. Both ours and God's.
Why God's? What makes a human think he would know what it is for God to decide anything? Why assume that God even has options? Things come FROM God —they don't happen TO him.
If God has no choice in what He creates, then He's merely acting in accord with something greater than Himself. On the other hand if He does have a choice, then He's not the First Cause because something has to influence Him to choose one thing over another... in other words there has to be a cause for what He chooses. Whenever God chooses to do one thing rather than another it demonstrates that He's not the First Cause. On the other hand if He has no choice in what He does then there's something greater than He is.
Ah, we've barely scratched the surface on the first one.
Are you familiar with the phrase (CS Lewis —
Til We Have Faces) —"...the babble we think we mean"? We have this monstrous habit of considering our concepts worthy, nearly reality themselves, and certainly fully representative of reality. WE come up with something by which to describe God, then hold him to our notions of those things.
Several times on this site, I've run into people jeering at the notions of God being omnipotent, or omniscient or any of several different things, only because these jeering folks think their words hold more value than even good thinking does. For example: IF God is God, he is necessarily First Cause (or, at least, I will consider no other God); this implies to some that he has choice, and to others that he does not; but if he is first cause, then he needs no ability to choose, nor does he need options, nor can we consider him at all encumbered by lack of ability to choose. In other words, we shouldn't anthropomorphize God.
FWIW, too, I haven't studied Aristotle, nor do I care much for Kalaam's argument since it doesn't demonstrate that the universe's creator is First Cause, so at best it is simply saying that the only reasonable explanation for existence is First Cause, the Uncaused Causer, and that, only after extrapolation that he doesn't show. I find three of Aquinas' Five Ways weak, because they depend on how we say things, and not on how things are. At best, they should say something to the effect of, "We should believe God exists, since we say thus and such." It's been awhile.