I would worry about getting onto your regional federation team first before you set our sights on the world team. If you arent on the level to even be competitive at the US championships you can forget about the worlds. Since your from the US also you should ask yourself 'Do you practice kendo in california?' If not and being on the US team is a goal you may want to consider moving there.
A kendo friend of mine from France (sandan) was told 2years ago that he was too old to make it into the national team...at the age of 24. (Although he still goes to the national squad practice by invitation.) Find out what the US (or other) criteria are.