So if you don't go to Cosco, this product is not available otherwise to the average joe??
If so, he should focus on the local market first before going nationwide.  As far as nationwide distribution, he will need
to open a plant on the mainland or move his business there just as  Robert Taira of Kings Bakery did a number of years ago in order to 
sell his sweet bread nationally. Unfortunately for us locals, he moved from Hawaii entirely and did not continue his business here.