Just hire Yua's Inazuma. She'll have this base's resource management up to 1000% efficiency in no time flat... and traumatize any who dare to try wasting even the smallest portion of supplies for no actual gain.
Me neither. All my daily and some weekly stuff has been done with only submarines. I only lost bauxite when developing/constructing nor when I need five or less 2-2 victories in half an hour. The quest rewards and regen take care of bauxite piling up slowly. So far 40,000 has been enough for an event, but I have my doubts now with the new land base system.