Attacking Japan? Much more daring than I would have thought you would be. If those reforms work well enough, combined with your past continous reforms, you should have the best equipped, best trained, and possibly best supplied army in China. Still, unless you manage to get the rest of the Qing warlords to help you, although you'll likely start off winning (as the Japanese army did not reach 300,000 men until 1927), I don't know if you'll be able to throw Japan out of the Mainland before they mobilize (roughly a month), not to mention the fact that the Whites are north of you, allied to Japan, and Japan has forces stationed there. Honestly, I would wait a year more, as that was when Japan left Russia. Still, hats off to you.