Quote - My current flight school have told me that I would be required to do the same training after my hour-building, as I would on the 150hr course..
Perhaps it is time to find a new flying school. Your CPL assessment is competency based. If you have the minimum hours, have passed the exam, and can demonstrate in a pre-licence test flight that you can execute the manouvres listed on the CPL test form to the required standard they should put you up for the test.
I would give any school which claims you must complete a set course of instruction to obtain a 200hr CPL a wide berth.