Holland is still presenting the LXX view, regardless of his own opinion or uncertainty. You will note that he gives the date of 275 B.C. Do you know that this very year is famous for the first major defeat of the Greeks to the Romans? And do you realise that the rise of the Roman Beast of historicist prophecy may be put to this date? I think that the view, as it is presented by Holland, is sound. In fact, I think that because Holland expresses it, that this makes it the best "working theory".