Do you have a credit card in your name? Do you plan on getting one, using a cell phone? Credit is gold, you need to take your car and refianance it, repoing is basically like having declared bankruptcy, you will be ****ed for those 7 years. I guarantee you will be buying something that will need credit, if you sell your car now you will only end up buying another one and guess what your repo will come back and bite you in the ass.

REFIANANCE the car, tell them your situation and extend your plan over more time with cheaper payments.