An Econ background and great grades means a lot. If you can build some skills toward the CS work, you can prove that you'd be great at whatever you want to do.
so, What do you want to do? Bring an analyst angle to a dev team? That seems like an easy win.
No one really cares about your degree. Heck, I have a degree in Fine Arts. Start doing what you want to do. If you find you need some coursework, do it. If you find someone who wants you to have a CS degree, have them pay for it.