I spent 8 years as a naval officer including a year in Vietnam and 8 months off the coast aboard an LPH with Marines who launched attacks against the VC and NVA. I do understand how the military and the Navy operate in wartime.
There was no way the Japanese could hold Hawaii even if our forces operated initially from the West Coast. They weren't capable of the logistics. And there would be no point doing it. US carriers and subs would make it impossible.
Not impressed I was Naval Officer too. The Japanese maintained logistics in the Aleutian Islands for 3 years EXPLAIN THAT?