I believe Airbus quoted 4700nm as the range for this aircraft.

ICN out of the question. > 5,000 nm.
TYO also right at 4700 nm (with winds, reserve fuel requirements I doubt it's feasible).

Plus both routes already seem to consistently have the demand for year round wide body.

I'm not an expert at all but just playing around with gcmap and thinking about it. Others I'm sure have far better and more accurate ideas of how AC will utilize these planes. 26 seems like a pretty large number to have entirely based out east though (YUL / YYZ).