A key component to a successful project is the scheduling of stages ... once demolition is completed, it is best you meet with your sub-contractors and make sure all measurements from the drawings are accurate. Often actual field measurements do not match drawing documents. It is critical that you work this through or many major headaches will develope. You do not want to start framing and roughing for plumbing and electric and then find out your walls are in the wrong locations. Communication between trades, the GC and the architect is critical . If it is rushed without the proper checks and balances you can be assured disaster is on the way ... just like the best doctors the best GC's measure twice and cut (build) once ...