Upload & Sell: On
China Man's hat, Haleiwa, Sunset Beach, Blow Hole, Hanauma Bay, Pearl Harbor, Sandy Beach, Tantalus, Diamond Head, Pali Lookout, Waimea Bay, Waimanalo, Waianae etc. You'll run out of time before you run out of locations. Definitely will need a Polarizing or ND filter.
Word of caution (I lived there 11 years) do not think that by locking your equipment in the trunk that it will be safe. Remember you will be a tourist and be polite to the locals and lastly if a beach looks inviting because it is deserted or sparsely populated, there is a reason for that, either bad rip current or robberies of personal possessions and car break-ins.
Enjoy the islands, there truly are a paradise.