You can do the CPL and MEP in the states, but you need to do the IR on European airspace, so they're likely going to train you then send you to Europe to finish up the IR. My advice is usually PPL/IR and hour building in the States, then a 15 hour IR conversion and 15 hour CPL short course back home. There's not much point doing an FAA CPL then converting it, because with low time you'll still need 15+ hours to convert. Unless you want to stay and instruct.