Twelve plants, four months, fourteen pods. Eating fresh favas? Not exactly priceless.
I think i'll stick with limas.
Favas have their own charm, i'm sure, when you need a bean that will survive a chilly winter. Limas won't do that. Limas won't tint a hard boiled egg a soft, blushing pink either.
That's a job for Crimson Flowered Favas.
But can you grow favas in Hawaii? Can.
At 1000 feet or lower they might not grow very well.
Try planting limas instead.