Make a plan for your new room setups and pack up stuff accordingly. If you have bought your new home, then you should have undoubtedly inspected it in advance and have the dimensions handy. Before packing up your old home, plot out what will fit where and how in the new location to give you a better sense of placement. This can help you come up with a plan for which items should be packed first, last, or discarded.Having a clear idea of what will go where will help you have a smoother transition while unpacking.
There is nothing worse than carrying heavy furniture upstairs in a new home only to find out that there is no place for it and having to relocate it multiple times. That is a great way to build up a lot of frustration and stress, not to mention the extra risk of injury.