I would SERIOUSLY advise you to get your setup straight and get THIS snake back to good health before you even THINK about getting another. Honestly, you've had one "beat half to death" and another that won't eat and probably has more problems than you know. Getting another snake with the one you have in its current state is IRRESPONSIBLE, CRUEL, and just DUMB.
Get this one straight and healthy before you even consider the possibility of buying another snake.