Thing is, I don't know what 24-70/70-200/100-400 to get. It all depends on what the A9r/A7r3 and 5Ds2 look like - either Canon or Sony look to be good options in the next cycle of bodies.
Sure you don't need advice on what lenses to buy but, to state the obvious, if you go Sony you'll be committed to Sony, go Canon and you'll have the option to switch between bodies in the next and future generations to come.
Also I'm not sure if Sony construction quality is up to the Canon L standard. A quick review of LensRental's teardowns should convince you.
Sorry to hear of your misfortune, can but admire your 'sang froid' ...
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Edit:
New Canon lenses seem to have suffered a ~35% increase in price (at keast here in the UK). As alternatives - Sigma have announced , but not yet released, a 24-70 f2.8 Art series zoom and have you considered the Canon 200 f/2.8 ?