I am trying to properly spec a proper stepper motor for a project I am working on. I am attempting to provide roughly 3000 pounds of compressive force (about 13300 Newtons) using a p series NEMA 34 closed loop stepper motor. I believe this is equivalent to lifting about 1,400 kg if the shaft of the motor is 14 mm. This motor has a maximum pull out torque of about 6.5 N-m at roughly 80 rpms... How do I spec a proper motor for my needs? Do I start with power?