Free Will implies that the mind has the ability to direct those choices beyond the realm of the material world's laws

Does it? I don't see why that's the case. This claims that there is simply no such thing as a materialist concept of free will. That's creating a definition so narrow that it cancels itself out. In what way is free will different from agency? You operate from an assumption that the "the mind" is only valid if in some way immaterial, but why should that be?

I mean, really, what is the difference between free will and agency? If your definition of agency is just free will but material, then nothing about the conclusions you draw is any different from a materialist conception of free will and you have achieved nothing philosophically or scientifically.