I'd like to expand on the above posters. Just because you major in something other than aviation, doesn't mean you can't also major in aviation. I think aviation as a second major will make you a better pilot. It won't help you get hired or move up your seniority number, but I think I am a better pilot because I went through a 4 yr program (no I'm not trying to rationalize the money).

ALSO one other thing!

Look into the schools that you plan on attending to finish up your 4 year degree. Ones that have in-house aviation programs (do not farm out flying courses to local FBO's) may be reluctant to accept all of your prior training if they are going to put their name on your diploma. They may make you take proficiency courses or whole courses over again...especially if they don't believe that you perform to their standards.