Bski, Have you ever looked at metal framing package some companies offer. We looked at one and the walls come already assembled with door and window openings. Then you just screw them together as the plan calls for. Good thing is that the only weight bearing walls are the exterior ones so a ruff truss can be free spanned. The one we looked at was about 1300 sq ft and the cost was around 10 grand, not including floor trusses if you need them.
