I believe humans have the POTENTIAL for free will, and that this is developed, and freedom from determinism is won, by knowledge, will, action and spiritual development: however reaching the point of freedom from deterinism is a rarity in the human condition: nonetheless I voted for the "total free will" choice above, because POTENTIALLY humans do have a POSSIBILITY of reaching the 100% free will goal.
My belief is more along your lines, Dr. Farr. Not to delve too deeply on the topic, but my concept of free will (in a nut shell) proceeds as follows: There are predetermined events
(1) such as how we are born, that is, what race we are born into, what class and country we are born into; certain genetic expressions of self, though there are some genetic expressions that are triggered by environmental circumstance, which are based on choices. An example of this would be the predisposition to heart disease and a person whose dietary habits aggravate the genetic expression thereof, such as the eating of processed foods. And to digress for just a moment to show a situation exemplifying a lack of choice, many poor dietary habits are a product of economic hardship, resulting in little access to healthy foods.
We also have innate talents, which are very well expressed or represented by the stars, such as athleticism and the making of an Olympian or a scientist who contributes to society a cure for a crippling or lethal disease.
My best and most simplest analogy is the image of a person standing at the foot of a path, or better yet, a person on his hands and knees, with powdered bottom, crawling along. There are also many other paths in the world, but this is the one this man finds himself on in his incarnation. There are many, many diverging paths, some leading toward unknown destinies, some which are clearly demarcated with a view to the horizon, allowing him a crystalline image of his future. Sometimes, while walking along these paths, some paths not taken close forever, disappear under the growth of the forest as time progresses. Others remain unchanged, allowing him to retrace his steps and follow it at another time. But as we travel, each choice of one road often limits or precludes the choice of others. Astrology allows one to predict the probable choice at a given time, but it is not a certainty, and a person is not confined by it. To think otherwise is to do a disservice to one's self.
So, as discussed previously, there are certain confining aspects to life, so there is a finite amount of choices, and because of this finite amount, we can, to some extent, predict the future based on probabilities. But the man walking on the path is not on a railroad track or a light rail, unable to change lanes.
The illusion of the lack of free will occurs when someone or something does something to us against our will. I recall someone rhetorically asking where the free will of a victim is when he is murdered. The victim did not chose to be murdered, so where is his free will? This is a good question. It is, however, looking at one side of the coin. The murderer exerted his will on the other person, violating his duty of care. Free will was used but used by the murderer. He was not mandated to kill by the stars. He is culpable for his choice. This is the power of choice and why we need to choose responsibly. Our destinies are very much intertwined.
Incidentally, this is why clairvoyants have a difficult time predicting the future. It is far easier to predict something that is within a week than it is to predict something years away. The reason is that within a week's time the conditions surrounding the future event have simplified so there are less variables to account for.
Anyway, that's what I have to say about it. I might write something better on this at some future time, when I have the time.
It is an interesting subject.
1 This is true if you do not follow the belief that we incarnate based on our own free will, choosing our parents in advance, as well as all the conditions that surround the environment in which we are birthed.