There is, of course, no one way or order to enclose a frame, it's all a matter of design. The complications of exterior walls are related to the various systems contained in the walls, so the drywall is normally hung after the walls are weather tight and the insulation, wiring, plumbing, hvac, windows, doors and etc. are in place. So if you can avoid the entanglement of systems in the walls and not be concerned with weather spoiling the drywall and if you can get the walls up quick and if your timber is seasoned, then fasten the drywall close to the center of the timber and cross your fingers and say a prayer.