Sorry, but in a deterministic scenario, there is no freedom to choose.
Of course there is. You can do everything you think you can do. You can apply your priorities, hopes, fears, beliefs, and so on, to the information you receive and make choices based on who you are and the circumstances you find yourself in.
What else is there to freedom? What do you want to be able to do that determinism stops you (would stop you) from doing?
You already admit that all the factors involved: the circumstances, your nature, nurture and experience - all influence choice, so almost everything about decision making would be exactly the same as determinism anyway. It's actually quite bizarre how people react to taking this influence to its logical conclusion.
The problem is that on the one had you insist that there can be no randomness, which means that all aspects of a choice must happen for reasons, but then you say that all the reasons do not, by themselves, define the exact choice. But that then means that some aspect of the choice, or some part of the process, isn't for any reason, which contradicts the no randomness insistence you started with.
Are you seriously unable to see the contradiction?
To the extent a choice is made for its reasons, it is deterministic - and to the extent its reasons do not define a single choice, it is random.