After being waitlisted this past cycle, I’m considered re-taking 2 of my pre-reqs that I got Cs in. I have a lot of debt from grad school and undergrad so at this point I can only afford to take these classes at a community college. Will this diminish my chances even more ? I have considered working and earning enough money to be able to take it at a college but it would take me more time. Thanks for the input everyone 
Congrats on your waitlist! I almost agree with you about the juco - could you take the courses at the same place you took them the first time? That would give the adcom a more like for like comparison.