Mydog - I've just caught up with the thread and wanted to wish you all the very best. I think you're doing amazingly well!
I had a thought about your packing, as I know it's really difficult. I'm on one of the clutter clearing threads here and have managed to cut a load of my possessions through that. At the same time, much of what I have is boxed up in some way, or organised to a point that it could be easily packed up. I'm just thinking that you might be able to do things like that; so, packing, but without seeming to be packing, if that makes sense?
One example could be to make up a box for bedding for each bed and add 2/3 towels to each box. Put them under each relevant bed. They'll be hidden away and will be very easy to take when you're packing up. You won't even have to think about whether you've got enough for everyone - it'll all just be there ready.
Another idea could be to sort out a load of clothes and toys (or whatever) 'for charity' but then get a friend to collect them and store them for you. You could leave them outside the house on the pretence that the charity is going to collect them.
If you've got a load of people to help you move on the day, but you're going to be on the clock, it might help to tell them in advance what they need to grab. You could even give them each a list. (I'm a list person too.)
If you need help with any more ideas for this, please ask.