I've heard Kona is by far the best shot you'll get at a shortbill spearfish in the world - only place they're truly common - you'll have to research as for time of year.
And not to rain on your parade but I didn't see Striped Marlin on your very impressive list up there... Nice work though!
I'm a spearfish away from the Atlantic slam myself but I've never fished the pacific
Good Luck!
Ameristrat