Good for you Beth!! I have moved 14 times in my adult life...
scary but true. The best advice I can give you for a self move is;
Mark each box with a number. On a seperate list (huge) write down, the number, room of where the box belongs and type of items it contains. DO NOT LOOSE the list. I suggest making seperate lists for your mom and grandmom. Sometimes you can not unpack everything, so the list is very handy when you have to put the boxes in storage and then need to retrieve an item at a later date. This system has saved dh and myself from many huge fights..........