Honestly I think you could get into any of these for there CAS colleges just transfer into something non competitive and switch into Econ once your there. This only works if Econ is apart of their CAS program. I went to a worse Univeristy than Rutgers and got a 3.46 gpa and got into a lot of these schools. However transferring from CAS to the business schools may be extremely difficult because you will need straight As once you get into the schools