For your second point, I don't think that's a big deal...I'm Arabic and it's part of our culture to live with our parents until marriage. Actually, I see a LOT of people living with their parents. So if you think that you have to do it to fit some norm than don't. If you want to move because you need to and are ready for it, then more power to you my friend.
I'm 25, 26 in April, and still live with my parents. Most of my friends, who are non-arabs/Muslims, live with their parents. So there is NO shame in that if that's what you're feeling.
You mentioned earlier that you spend $15 a week on the bus. If you get a car you'll probably be spending a LOT more than that given our gas prices, and keep in mind $3.00 per gallon is going to be the norm for a VERY long time. So there's that to consider since you want to save money for moving!
You're in Florida, right? Gas is close to 3 right?