CFI CFI CFI...The things you learn flight instructing and hanging around a GA airport will stick with you longer than what you learn in some classroom in Florida. You will more than likely not work at a regional your whole life. You may find yourself flying GA airplanes again and the skills you get flight instructing will help you there as well as the airline. The RJ course might help you learn how to manage an airplane. CFI'ing will teach you to fly an airplane through pure talent, better understand how people work in an airplane, and learn the material i.e. multi engine flying, instrument procedures etc through teaching it.