if you live in a moist climate, a heat box ,, or closet with a light bulb going would be a good idea,,
the lower moisture content will make the bow take less set,,
yes if kept in high moisture even with finish it might take some moisture on,
but if kept in side,, it shoud stay to a reasonalbe moisture content if sealed ,,
if you make the bow at 12 % it may not perform as well as you would like,,
that being said,, even a bow that follows the string a bit,, can shoot an arrow quite nicely,,
you may just have to pull a bit more weight to get the cast you like, thats my take on it,,, I dont think you have to move to get a nice shooting bow,,
just keep it in the driest area available when you are not using it,,