This comment isn't exactly germane to the sentence but I didn't know how else to make the suggestion to the Duo Team: For the topic of "greetings," it would be REALLY helpful if you could teach us everyday, useful phrases such as "good morning!," or "good afternoon!," etc. (I think I've got the "Iesu pu" down pat by now ;) ). Mahalo!
Mahalo! I actually know a few but am really hoping to hear them spoken on Duo sometime - I used "aloha kakahiaka!" one time rounding a corner on a race on Kaua'i, only to have my pronunciation sort of curtly corrected by the person I addressed (and now I can't remember what it was! - "ka-ka-hee-AH-kah"? or ka-ka-HEE-ah-kah"? or...?). Any assistance appreciated!
I cannot say how to pronounce kakahiaka authentically. According to one text, "Spoken Hawaiian" by Samuel H. Elbert, "...In general, stress is on the next-to-the-last syllable and on alternating preceding syllables, except in five-syllable-words...", and that slow-spoken and fast-spoken Hawaiian can sound different. Also, all long vowels shown by macrons are stressed. So learning pronunciation is definitely better if you can hear it spoken. Duolingo Hawaiian is still evolving. Maybe someone else will step in and offer some advice wherever sound hasn't been added yet. Best of luck.