I've been there twice to Oahu, I know food can be pricey but if you are a smart shopper I think it could work. Also I would be pretty much busing it. I'm debating about moving and giving up a try this summer, the weather scenic spots are beautiful and you can have fun for free with all the scenic things to do
Definitely check the cost if living before you move. I was offered a job there back in 2006 and the salary they offered me was double what i was earning here in Virginia, but I got to checking with Realtor about buying a houses there and you can't hardly buy a bungalow on Oahu less than $1.5 Million, if it has a view of the ocean make that $2 Million. Efficiencies were going for $250k over there back then.
You can buy a really nice house here in VA for 250K