Item 12 is not necessarily a good idea unless the wires are twisted. Parallel wires bound tightly together over long distances produce ‘crosstalk’. This is where the magnetic field generated around the wire is picked up by the wire next to it and superimposed on the signal on that wire. I would recommend twisted wires over long distances; the twisting reduces the risk of ‘crosstalk’ considerably. Or you can use screened cables.

Paul