I don't know what you decided to do or if you're still on the fence about it.

I will tell you that (from experience), I graduated high school and then felt as if the opportunity to "grow up" was somehow taken away from me because I was still living under my parent's roof and their roof, their rules...

Also...I was told by my parents that I wasn't capable of achieving my goal. I wasn't good enough. That killed my self-esteem. I'm not saying that they wouldn't have done that anyway, but if I was living away, I would have had a DIFFERENT support system.

Have you considered getting your required subjects out of the way at a community (WAY less expensive) college and then spending the last 2 years away?