Ok re reading it, you still need to (I think, might have missed it) explain how/why Canada did a complete 180 politically, got the industry to build anything resembling a real fleet, got kicked out of the british empire (and it would have to be fairly near the POD, otherwise there isn't time to formulate that kind of political course), and decided on what amounts to national suicide, because even if they win, they lose.
Also I think directed energy weapons in common use at this point is probably ASB, if nothing else because you run into serious problems in fog and rain, unless they've got micro fusion or something. They're useful in limited applications but to my knowledge ground level warfare isn't one of them with anything like current tech.