Or just do it combined with the type rating and save 15 hours of sim time (reduction is from 25 to 10 hours for the MCC Course if you do it combined with the type rating).
But people nowadays rather throw money away by doing MCC+JOC (why the latter is neeeded is beyond me) on a full-motion sim and then doing the TR for the same type as was the sim for MCC/JOC.