I would recommend a full, genuine, credit card (
www.citicards.com ) that acts more as an expensive kind of cash than a very narrow expenditure card like a JCPenny's card. Think of it this way, a freddy's card will be used for groceries, clothing and the occasional nick-nack. A true creditcard can be used as disposable money; between the two the true credit-card shows a better credit worthiness than a store-specific card. Building credit means to demonstrate responsibility.
See if your mom will have an issue providing you with her tax returns for FAFSA, if she doesn't then you should be better off. Do this ASAP because that will help you figure out what you can do. Moving to Portland would be a good idea no matter how you cut it. If you would like some academic advising help I'd be glad to tag along and berate the advisors into getting you a plan that would actually transfer wherever you need. (Huzzah life experience!)
If you have to go to school, I would suggest starting off with 8 credit hours (2 classes) for your first term and get a feel for it. This is where PCC is so nice, because it's effectively "highschool plus." As an inbetween, you're loaded with something closer to a 4-year uni workload but still able to maintain some time to get used to it.
The first year of any real college program is just, "getting it," which is why it's usually fluff classes.