Hey there,
I first want to say that you're incredibly brave and strong, and you will need to continue to be in order to live a life that is going to be true to yourself. I suggest that you speak with your parents and tell them about your doubts, tell them that you believe it is important for you to be honest (perhaps don't tell them your posting here, they should be on a need to know basis since you're almost 18). Tell them that you know that you need to go to college, and that you are prepared to do this with our without their help. Tell them that you respect them (even though I know you're struggling with this at the moment), and love them, that you don't want to loose them, and that you would appreciate their support. In return you will do your best to live a conservative life, and respect the rules of the house which do not conflict with your own.
I honestly don't believe that your only answer is moving out and making hardship for yourself, or alternatively conforming to the extreme jw expectation of your mother (parents). If you have the above conversation and it is clear that your mother cannot support you in your new life, then you may have to consider moving out, but try not to let it get to that if you can.
I moved out of my very strict jw family when I was 18y/o and it was tough. It has all worked out in the end, and if I had my time over I'd probably do it again. I'm not sure what the welfare situation is like in the States but I know that here in Australia you're not eligible for fortnightly student payments without declaring your parents income until you're over 24. If your parents aren't on a high income, then you might be eligible for student loans and payments anway, ask for your fathers help in filling out the necessary paperwork. Alternatively, and this should be a very last resort, if you are able to prove that your family conditions are very intense and unpleasant (you normally have to prove verbal abuse or more) then you may be viewed as an independent adult in the state your living in, therefore don't have to prove your parents income.
Well I wish you all the best, and continue to keep us all updated on your progress:-) froglett