What about from any of the other airports mentioned above?
There are late enough flights out of OGG and LIH on M"S. I get into KOA on Monday at 2:15 PM, I could either fly directly from there to one of those Islands and spend Mon-Sat there and just fly to HNL on M"S, or I could stay on KOA until Friday, spend Shabbos on one of those islands, and then fly to HNL on M"S. I could also keep my itin the way it is now although that probably doesn't make the most sense. Any thoughts?