'Last Flight Out' Cockpit Modelling

I have begun modelling the interior cockpit of the plane for my digital set taking reference from my low poly model. When doing the low poly version I discovered that it would be difficult to create the man section of the cockpit and the exterior of the plane with the same geometry. To fix this problem I have decided to create a separate interior and exterior model which will allow me to focus the main detailing on the interior section.