If I understand correctly, your parents are taking out PLUS loans for you. You have committed to your parents that you will be the one to pay off those loans. You expect to graduate from DePaul (if you can’t successfully transfer into a better college or university) with something in the range of $120k in debt.
Ask yourself if a DePaul degree is worth $120k in debt. This will be about $1,200 (after taxes) each month for ten long years, or something like $1,600 of your pre-tax income each month. Even if you do land a high-salary job, servicing that debt will absolutely cramp your lifestyle. There will be many things that you will not be able to afford - a home of your own, an apartment in a better neighborhood, saving to start your own business, a better car, an MBA. One more year at the CC will save you 1/3 of that debt. Think about it.