In your luggage you should only need to put items that you will use on a regular basis. It should have your passport as well as travel documents. You should also keep any item that you use often. The hand luggage should also be light to allow you carry it comfortably. Since you will have the hand luggage with you most of the time, it should only carry important items. Do not put stress on yourself about carrying everything. It should be light enough that you can carry it anywhere. Nothing should prevent you from having the most enjoyable trip.