Look, I may be out of line here, but maybe you should think out of the box at this point. Why don't you consider The Austin Center for Design? Jon Kolko is amazing and they are doing some really cutting edge stuff. Here is their website: http://www.ac4d.com/
If your dad could swing their 1-year program you'd have the opportunity to build an excellent portfolio of projects which might mitigate your GPA issues, and you'd be able to determine if you're heading in the right direction without any further "overextension." They are a for profit institution so they might be more flexible in their admissions, but I really don't know. It's worth a look.