Rim brakes wear the rim, and the wheel goes down to the water and re wets rim.
Various options:
and Center-lock hubs and discs, would come off more easily.. for shipping ..

Fwiw, Galfer, a California company, discs are significantly thicker than Avid,
.. but Avid's and others, cost less.

mechanical, cable discs are flexed sideways
into the inside pad by the outside one, you should know..




Rim brakes?
I have found Magura HS 33 a superior rim brake , just no drop bar hydraulic lever is made.

The slave cylinders bolt on V brake bosses , but don't use them for pivots.
closed system , snap on /off pads, &
they have Kool Stop make their Salmon /red compound for them.