I'm looking for advice on a Revit workstation for a rather large Revit file I'm currently working with. The building has been modeled architecturally in Revit and we're about to add the M, E, P, and FP systems into the model in RevitMEP for an owners FM needs. The complete architectural model is approximately 1.3 GB currently. I'm running the architectural model on my current laptop (specs below) in Revit 2013 and due to the size it can be rather sluggish. My concerns are that once the mechanical systems are added in the file is going to become unusable with my current hardware. The building is a university research facility with rather involved systems. I'm looking for suggestions, given the size of the file, what type of minimum hardware/specs I need to be looking at to make this model functional for myself and eventually the owner on the FM side of things. Any help is appreciated.
Video card: GEForce GT 650M