Who cares if the power settings are done in EPR or N1. EPR is just a function of how efficiently the engine is running. We fly a mixed EPR/N1 fleet 777 and does it pose any problems? NO
WHy? You still set the power according to N1 in flight.
Furthermore this whole sim hiring thing won't do you much good, its all about CRM / MCC skills. None of the detail is particularly hard, it was more useful in the times of the BAC1-11.
But don't listen to me, obviously do with what you feel comfortable with but I'd say it's a waste of money if you have seen the inside of a commercial airliner before.