Best of luck with the project George. I don't mind tearing down castles, because I know that then I get to build them again. Each time there are new parts for me to add, or I have found new ideas to try and interesting new floor plans to play with. It's always easier to start from zero building than to try to rework an existing building as well. I am sure you have plans to be organized about it, but my biggest advice is to split the parts up into storage bags and boxes by type as you go. It is so much easier to build again if you know you can reach into a particular bag for a two way connector etc. I found a brand of zippered storage bag that's just the right width for the wall connectors, makes it much easier.