Based on what you wrote, Purdue is the worst fit (in terms of major) out of all of the schools, so it looks like the last choice regardless of cost. Changing into CS at Purdue is a competitive admission process and “Space is extremely limited” according to Program: Computer Science Major Change (CODO) Requirements - Purdue University - Acalog ACMS™ . You do not need to visit to find this out.
Does a regular CS major (UCM, Wisconsin, or if you get off the waitlist at UCSC or UCR) appeal to you more or less than the computational media major at GT?
Remember, you can only take $5.5k loans the first year; anything more would need to be parent loans. You may want to remove any school where the loans would be greater than this amount.