I moved 1000 miles away to spend two years at a residential treatment program, so I don't think it's unreasonable to move to be able to access better services. I know the Southeast has pretty lousy services in general. (I moved from Alabama to Massachusetts, so I've had person experience.)

Just bear in mind that you'll be leaving any support you have established at home if you move. Even if you're not getting adequate professional support, it can sometimes be hard to leave a network or supportive friends or family, if you have those. Establishing an informal support network is an ongoing struggle for me, and it's been six years since my move. Just be sure you go into it with your eyes open. Starting over is hard, but it can also be lifesaving.