Most online places will probably ship to you, but that might be expensive.
Most of the equipment is stuff you could probably get individually outside of a homebrew store, I suppose - you could always get food grade buckets, cut your own hole in one for a spigot as a bottling bucket. Siphon equipment is just plastic hose. You'd likely still want to get a bottling wand and a hydrometer from somewhere.
Don't know where in Hawaii you are, but there's Hawaiian Style Homebrew