Not sure that you would be able to take anything home with you, but Plant It Hawaii has their huge twice annual sale to the public November 2nd and 3rd. It's one of the the biggest, if not biggest, fruit tree nursery in Hawaii. You can check out their website for what they have.
I have a small, one acre homestead with lots of stuff planted too if you make it out to Pahoa. A lot of it is still young though.