If you check the "Forces of Nature" group build, in the Group Build section, I built a 1/700 model of USS Wisconsin (BB-64), sister to the Missouri. Both ships were in the same Measure 22 camouflage in 1945.
You can see how the masking went, and I don't think it would be much different for a 1/350 ship, except bigger. It wasn't as tedious or difficult as I thought it might be, even in this small of a scale.
Good luck!