Looks good Neil, Hugh came up with loads of cracking designs anyone would make up into a great layout.
Can't help on the wiring, my worse side as well.
Plenty of ideas come into my head but I don't know what is possible because of electrics, but here's some
1 rotating cctv camera
2 vehicle entering yard through gates and then leaving
3 urban fox moving across back scene
All crazy little ideas but something to make it different from the rest.
Besides my daft ideas I will be keeping up to date with this.