And don't forget the steamers that your passes are good for in Germany and Switzerland and elsewhere. If you have enough time you can sail to Greece from Italy too. Now, the key to easy travelling is keeping your packs as light as possible. Shoot for no more than twenty pounds. Some manage two months with packs that are as light as fifteen pounds.
Most people take far more than is needed.
The basic rule of one change of clothing is a good one to try to hold to. If you're interested in taking pictures be severe in your choice of equipment. Take the smallest and lightest possible and no extra stuff. One camera can weigh more than a pair of shoes. Sometimes being forced to rely on minimum equipment can make us pay more attention to picture taking.