I live in Wahiawa and have probably a bit more rainfall than you and I am at 1150 ft. I currently have Sharwil, Greengold, Nishikawa, Ota and Malama in my yard. I have Yamagata, Beta Rodrigues , Nishikawa, Sharwill, Green Gold and Ota at a farm at 750 ft. The biggest problem in Kaneohe is the amount of rain. make sure your tree has a lot of good drainage, no ponding. A slope wound be ideal. Amend the planting hold based on a soil test from the University or use the soil map.
As for varieties that fit your requirements, Sharwil holds well on the tree as well as Green Gold which is a seedling of Sharwil. if you would like some Summer fruit, Malama or Murashige are good choices but the shelf life is not as long as Sharwil. You could consider grafting different varieties on one tree. Best of luck and enjoy your trees. Learn to graft, it is fun. Aloha.