I have a poor track record germinating Rubus, so I can't say much in that regard. But I think it could do well for you. Keep them in the shade during the hottest months, but test a few plants in full sun, to see how well they adapt. Rubus tend to be strong, hardy and vigorous plants. I think there's a population of R. glaucus in Hawaii, though I'm not fully certain.
Right now I'm growing R. probus, and have had success growing temperate climate Rubus in the worst, most neglectful conditions I could give them, with strong summer heat and full tropical sun. I haven't lost any to my climate yet. Highland tropical species might be as hardy, or they might not, but I'm decently confident in R. glaucus.
Trade Winds Fruit has seeds on occasion, so I'm keeping my eyes out for it, to try myself.