Moving to another state has some appeal, if only so my dysfunctional family doesn't stalk me at work back to my new place, but the mainland is usually more harsh in terms of weather and crime, as well as road rage

. Plus it takes some time for in-state tuition rates, as well as the fact that I don't know anyone.
Moving to another place increases the financial burden, and might open me to the risk of a potentially psychopathic/obsessive mother/brother to stalk me at work/school. Work would go straight to 40 hrs/wk as a necessity, taking 8 hours away from school/study/projects/homework. Still doable, but I already have back issues due to work, and it's not improving with a 40 hour work week(I've had sharp pains in my back since summer started and I went from 32/wk to 40).
This situation is the shortest in terms of time, which would have me getting my BBA in 4 years. I'd already be graduating at 30 and wouldn't be able to start my career until then.
Whether a car or motorcycle, you have more freedom of movement with your own transportation. The lower initial price of a motorcycle is appealing to many on a tight budget. I find parking a motorcycle to be easier because cars usually end up "way out yonder" versus motorcycles which in a lot of cases have parking next to the handicap parking.
In terms of a financial burden, living in a college dormitory while not appealing to many is relatively cheap and a relatively protected environment. Stalking and crime in general are very low in most places. I can understand the idyllic appeal of Hawaii but, there are other very nice, picturesque, low crime areas to choose from on the mainland.
In terms of financial burdens, out here you can find 1br apartments for ~$425 a month plus utilities. While this rent level won't put you in the "rich" part of town, a lot of people earning a meager living seem to have a good quality of life. The difference in rents would go a long way to easing the financial burden and could allow you to continue living with a 32Hr work week.
As a tax paying citizen, most states will give you in-state tuition. Heck, even illegals in some states get in-state tuition levels. If you are looking at things objectively, I think you will find the trade-offs between Island living and a lower cost mainland location to be more favorable than it may initially appear to you. Sure you don't know anyone yet but, the people you do know in Hawaii don't seem to bring much happiness to your life.
In the end, I hope you find a solution that makes you happy and fulfilled and avoids the entrapment you currently seem to be in.
And again, I will suggest considering a mainland job that offers FREE or low cost education options. $12~16 an hour with health benefits and free tuition is a good option for many. I even went to school with a person who was a janitor at the local hospital. While the job wasn't glamorous in any way, shape, or form, he got his education the same as I.
So, while a $4K motorcycle and $2.5K in protective gear would get you off the bus in Hawaii, it might be better spent getting you into a different environment that lessens your stress and improves the quality of your life. Your desire for the quickest way to a Bachelors degree is a good idea but, 2 years at a community college with the last two at a "big" name college is more cost effective. Community colleges also have class schedules that are more "compatible" with people who work their way through school so that could be advantageous as well. Add a bicycle to the mix and I think you and many others would be surprised what they can achieve with their meager budgets and limited time split between work, school, and a cheap apartment close to school.
Before you dismiss the bicycle idea, consider the people in Europe. Whether a college student or working professional, lots of people commute on bicycles everyday. Sure, most of us won't consider a 10 mile bike ride to and from work or school to be acceptable but, lots of people in Europe consider that a normal part of life. Heck, I would rather spend 45 minutes on a bicycle versus 45 minutes in traffic. While this won't work in L.A. or most parts of the west, in the Midwest and back East bicycles and public transportation are a reasonable alternative. This would free up some money to support your education.