WOW. I totally understand how you want to have a balanced quilt. I moved TOO but I made sure everything was numbered. I use pieces of leftover scraps and write various alpha and number combinations so I am always able to put the blocks back in the original order. Since you have a design wall, I would do a small section and once you are happy with the layout, move onto another section. If you get the urge to move the blocks around, take a digital picture so that if you want to go back to what you had before the change, you have a reference. Take your time and I am sure you will get it right. GOOD LUCK !!!