You have in this post mixed the issues about physical capacity with issues about free will. According to your prior definitions, there are no impediments to free will, otherwise the will would not be free. Thus, physical limitations may be a consideration that limit the number of your selections, but they could not technically be considered influences to the decision among available selections. If they could, then you no longer have “free will.” This is by your definition.
For example, if you don’t own blue sox, then the blue sox/green sox choice would not be in the realm of free will. You could not choose blue, if you wanted to. But, that is not a limitation to “free will”. If it is, then you have a form of “limited will”. Are you prepared to acknowledge that?
Your definition must stick to, “Among available selections, there exists absolutely no influences (except your will) affecting your choice.” Correct?
impediments cannot exist to free will, otherwise you would not have “free will”. Correct?
“Among available selections, there exists absolutely no influences (except your will) affecting your choice.” Correct?
Impediments as well as influences usually exist. For example, the apostles had the economic impediment to follow Jesus: several, for example, abandoned their business. Likewise, in moral choices we all have cultural influences, such as the inculturation not to steal, or initiate violence. Nevertheless, with all these impediments and infuences combined, man still able to make choices: some chose to abandon their fishing and tax collection businesses; others chose to tend to their families first, even though they were drawn to Jesus. The inculturation still leaves us today with a variety of options, for example, in choosing the right balance between work, Christian devotions and family.
Free will operates both within constraints and under influences. Think of it as a system of roads: the need to stay on paved surface is a constraint, and various road signs are influences. Yet, the driver can freely choose to turn one way or another at intersections. There is no impediment for him to choose any among available roads.