Optimal packing order is based entirely on preference. Some people like to pack their living room last - some like to pack rooms in two lots - one round to remove the non essentials, and one round to complete packing, others still like to pack where they can, when they can.
Deciding on what's unimportant and can be packed first is a good place to start. After de-cluttering thoroughly, packing any books, and out of season clothes, you can start deciding on a packing schedule. Your packing schedule should take into account any redecorating or repairs you want to undertake - and should also allow for anything you need to use.
These essentials should be packed over the last day, so don't leave out too much - or you'll find it very difficult to finish packing in time. Wardrobes, your garage, and shed can be packed as one of your first tasks - if you don't use your garage and its secure, you could then store any boxes there, or in cupboards.
Books, videos and DVD's are a good place to start, leaving your essentials out until you are about to move. Packing your bedrooms, toys, and clothes should take place over the four weeks preceding your move, but you may want to consider packing as much as you can and keeping out only essentials. Home offices should keep only the times they need to complete and fulfill orders over the duration of the move - and pack anything that you don't use as often.
Packing your dishes, cutlery and cooking utensils is probably best kept for last, alongside any of your home office materials you use regularly - over the morning of your move if you can - as is anything like shampoo, toiletries and work uniforms and equipment you use for your work. Packing might take over four weeks, but its worth it