A step by step guide to new walls... Schoonover style.

1. Start with torn out lath and plaster walls. Finish framing out weird basement stairwell areas and old chimney location to create a linen closet. (Kitchen stairwell box shown here, top left.)
2. Buy excessive amounts of insulation and suit-up.  Full body coverage recommended. 
3. Cut endless strips of itchy fiberglass to puzzle-piece together for entire kitchen and bathroom.
4. Call in the reinforcements. (Mild supervision required.) 

Further tips:  
Wear neon. 
Don't break the shocks in the Schoonover family station wagon by overloading the vehicle at Lowes.
Be sure to wear the same work gear and utilize the same drilling stance as your twin.