The more I think about it and given the amount of time in ground training, it could be a very good program. A significant amount of time in a true simulator on a Stewart platform can be great training. But, I don't think it should be a jump from that to an airliner or even a twin turbine.
Without knowing the background, I believe that couple hundred hours required for commercial was for good reason. The cross-country time is for good reason. Those provide experiences you will never get from sitting in the safe, non-threatening environment of a simulator.
Which would you rather have... a pilot who made 50-100 hours of real cross-country time followed by a few hundred more with students? Or, twice as much time in never more than a simulator?
If you choose the latter, let me know which airline you'll be hiring for so I can schedule another.