$40-45k is reasonable for out of state. I spend $24K on tuition, which includes $2K for health insurance. Then you have your equipment, which averages out to about $1K per year. That leaves you $15-20K for living expenses. I figured it out and you can live the same either on campus or off, it just depends on what you need and how many people you're willing to live with. I have cats and my own furniture (full house full), so it makes it a lot harder. But you could spend about $600/mo on rent ($5K/yr), $2k for food, which brings your total to $31k. The specific items you need to spend on after that, I cannot say.
I spend about $40k per year because I have to pay a lot more for rent...and I like to eat. If you are in state, it's going to cost you about $10K less. So, in the end, you could definitely get away with only spending $25k/$35k if you don't go too crazy.
BTW Work study, great idea. You should always take it, but you don't have to get a job. It's just there if you want to, which I did, and so did some of my classmates.
Also, I think there is something us students all need to think about. If you take it, most likely you will spend it. I am pretty tight about money, but with everything that goes on, sometimes I find it easier to take all I can get and not worry about what I spend (and trust me, I am an anal tight-wad). Make sure to give back anything you really don't need!
Let me know if you would like any more specifics.