Will I be able to dj again w/o pain after a dislocated right shoulder and broken humerus?

Shoulder dislocation. That would be the goal. It is hard to predict how a patient will heal, but sticking to the plan of your physician and physical therapist will give to the best opportunity to heal fully.
Yes. Assuming things heal correctly and motion is maintained after healing return to regular work should be possible. People with jobs that require a lot of overhead activities have mote difficulty.