Does it stay too warm there for feijoa?
How about I suggest you grow something that is lesser known and reported and see what happens, for fun? I've been hopeful for the Alibertia bertierifolia that recently popped up on some of the seed seller sites... Bellamy/Kameron reports in his description that it is a delicious fruit and given its genus (relative of borojo) and intriguing appearance, I have a lot of hope for it (unless anyone knows otherwise). It may still be in stock on Anderson's Tropicals.
I would love to run an experiment if anyone wants to donate a tree

But seriously I have thought about doing that. Mamey has been big on my list, so maybe I will track down several of the big varieties and see how they do.
Date palms I think would be another interesting experiment, but idk if anyone local has them
Olives were another thought, but it seems like chill hours would be the big problem. I know of someone here who has a Arbequina, but has never got fruit.
Nut trees have been another thought as well. A big part of my growing is self sustainability, and I would like to have some more good fat trees other than avocado. I planted a macadamia, but it was a lot to close to a wet spot and died. I had have really thought about ackee because of good fat, but the toxicity of over and under ripe fruit has scared me.