You basically need to beat France, and then Britain will probably make peace. Unlike WWII, the UK isn't as firmly committed to the conflict, and likely would make peace if it became necessary (especially if you can keep the US out).
None of the proposed solutions really do that:
-The HSF was extremely lucky to escape from Jutland as it was; more ships doesn't change that (and the Brits can afford losses much more than the Germans can)
-Allied mutinies: possible, but seem difficult to successfully capitalize on too much; offensives into trenches weren't especially successful even at the best of times, and a serious threat to Paris is likely enough to cause the mutineers to end the mutiny
-If you can send significant forces to Ireland and support them, you might as well go full on invasion of Britain; i.e. it basically requires the Royal Navy to be eliminated first. Good luck with that. The alternative is just a few agents as support, and that's not enough to do anything other than make the Brits angry.
-Even if you can somehow seize Suez, the British are capable of sending supplies and ships around the Cape. Besides, they can retake it fairly easily (as they have effective naval supremacy)
-The Indian Independence movement isn't really positioned to be much more than a minor nuisance at this point, and it will just anger the British (and discredit any Independence figures who go along, at least in the short term)
You need either a quick defeat of France in 1914 or to avoid antagonizing the US later on.