I seem to have misunderstood your post (and possibly conflated it with others). I thought you were arguing that "free will" was a third possibility, distinct from a deterministic or probabilistic universe.

I am entirely happy to accept that free will is compatible with determinism, and it sounds like we have similar views on this issue. Personally I consider ownership of "will" to be a far more important notion than that of some abstract metaphysical "freedom".