Hi, this sounds like a wondeful idea, recycle wood and building materials.
We recently bought a 1979 double wide home, and we were debating to remodel the exsisting or build a stick building.
There would be so much we could reuse, the wood in outer walls, the cabinets, sinks, toilets and windows are in excellent shape.
I will be calculating the cost and benefits of this option. Surely could save money and environment.