don't pack just books in a box - mix books with other lighter stuff or they'll be a mare to carry. Same goes for other heavy stuff.
Use towels to wrap stuff and use waste paper bins/laundary baskets to store stuff.
When you take apart the beds and shelves, put the screws,alan keys,other bits into a named sealed bag/box with lid and tape them to the piece of furniture they come from.
Buy spare curtain hooks to pop in your handbag so that once you're there, you know where they are if you need extras for the new windows.
Print off a list of change of address letters to send to companies like car insurance/banks/tax credit etc.
Buy a pack of cans of soft drinks and pizza for removal men so they don't have to go off to the shop mid-pack.
Put paracetamol in your handbag; you're bound to get a stress headache!