1.) RTIS is the only way to go for programming video games. BFA is where to go if you want to draw a lot.
2.) Tuition is about 550/credit. In total, there are 154 credits to complete the program, which is about as much as a Master's at a regular university. Then you have to pay living expenses, most people have 3 other roommates in a 2 bedroom apartment which is about 330/month.
3.) You need an overall 2.5 GPA for all classes. Combined math grades must average a 3.0 and it really helps if you take AP courses as they are weighted.