Hi C.
Wow, what a choice you have to make! I know half of you must be saying go go go, and the other half has to be thinking you can't. Have you ever seen/visited Kauai? I think before you decide on the move, forget the fact it's Hawaii, is that a place you would want to live? Hawaii is a wonderful place to visit, but think about it, this is not just a visit, you have to live there, function daily. New doctors, day care, schools, stores, an entire new way of life plus a new culture. Are you ready for that daily. Do you know anyone there, and even though you said the pay is good is it enough to cover living expenses. The cost of living for normal daily, week to week, or monthly expenses is higher because they have to get it over there. Clothes and shoes are more expensive. If you need more then sugar your going to pay a lot more then if you bought it here. Sugar is made on the island so no shiping required. How long is job offer for, is it a year or 2 or for as long as needed. If its short term I would go for it, but if its for more then a few years I would give it more thought.
As far as your family, that's a really tough call especially since they moved to be closer to you. I would take into consideration the health of your family especially your parents. If all is healthy and well then that's not a factor. I realize any thing can happen at any time, but if everyone is well then you don't have to think about spending as much time as possible with a sick family member. If all of your family is good health and well enough to travel then they may have a good reason to thank you. They all will have a wonderful vacation spot to visit. From what I could tell (and I just did a random search on orbitz, during winter months,flying out of Denver) Hawaii is not a cheap place to fly to, about $400 a ticket. But with your travel expense from work you could fly home during winter months, giving you and your son a little taste of the cold and snow (in case you might think you will miss that) and family can visit you during the off season which would make it less for them to fly to Hawaii.
If you really think this is a good move for you and your son, and your future and place you want to call home and make a home I say go for it! If you are not 100% on the decision but lean more towards doing it, just have a plan "B" so to speak if you get there and your not happy. That way you know what your going to do incase your not happy you don't have to be unhappy w/o a plan.
It really sounds like a great oppertunity and I think I would have to take it if it was offered to me. I do understand there are a lot of factors to take into consideration. I wish you all the best with what ever you decide to do. You will have to keep us all posted as to what you decide. If you do go, let us know how it is going.
Best wishes, happy, safe travels, and congrats on the job offer.
T.