What sort of Power consumption should I be able to get down to when turning everything off
Turning things off will not stop the power usage on many electronic devices, tv’s microwaves or anything with a touch pad to turn it on consumes power to keep the electronics alive watching for a button push.
Even power supplies to computers and cell phone chargers when not plugged in consume a small amount of power. How can you tell if your “wall wart” plug in transformer is using power? Feel it if it is warm or warmer than the surrounding area it is consuming power how much ??? It varies cable boxes computer routers are all things that add up. If everything is unplugged most homes can get down to 15-20w and these are hard wired transformers for door bells and furnaces. So you should be able to get down much further based on testing I Have done for customers.