The "if" in "if you were a different you" is meant as a hypothetical counterfactual. My point is that the outcome is a function of (you, stuff that isn't you) - not, as in classical determinism, (stuff that isn't you). There is certainly a sense in which you "couldn't have been" a different you. But that doesn't change the fact that - insofar as there is a you - your actions and the results thereof follow from that you. That the you that is follows from other things is immaterial in regard to 2 (it is material in regard to 1).

It boils down to this - what is a choice? I would contend that you do have a real choice and that the choice is made by you - again, insofar as there is a "you". It just happens to be the case (assuming determinism) that one could know what that choice was going to be, if they possessed more knowledge than anyone actually has.