Hi, I think you will be fine, you are very young and also will be a full time student,If money isn't an issue, you definitely will do fine.
This might also help you out,There is a student housing in Waikiki, I don't know much about the cost, but some girl told me is quite affordable considering is Hawaii. here is the link to the website
Hawaii Student Housing Apartments, 2280 Kuhio Avenue Honolulu, HI - Apartments for Rent on ApartmentGuide.com | Honolulu Hawaii | 85663 .Since you are coming alone, maybe you should consider a student housing, there will be plenty of other students from your same age,situation, and interests. it will also help you to make friends quickly
About the culture shock.. Having lived in Miami as well, basically replace the latino influence in Miami for the Asian and you have Honolulu, you are on the right track since you said you love the asian influence.
Hawaii has its pros and cons, there are a lot of things I definitely don't like about living here but Im also young and all up for new adventures, and as I mentioned in the beginning If you have the funds and the financial support to afford the high cost of living of Hawaii, go for it. If not please do your research carefully . good luck!