AA required 1000 hrs turbine, 500 hrs turbine PIC. I'd recommend staying in your RJ if you can achieve those goals.
While you're gaining time apply to the majors. All are hiring or will be soon.
Continue applying at other carriers but if all you're going to get is FO time at some point you'll need to get turbine PIC to be competitive. For this reason staying in your current job might make sense.
Del Rio 1984. It was a long year...