Well Aerohip, guess by now you have figured out there are two rings in the decision target. The center ring is centered around attitude, mental fitness for solo life, skill and equipment preparation. This center ring, like any hub or target is the most important. Without the hub all the rest falls. Also, taking care of that has a higher payback than things in the outer ring. The outer ring are the relatively less important things. They are the things that can be winged along the way. An example, is a cell phone. It isn't necessary. But it can be a great convenience as long as it isn't the primary emergency communication device.
One thing to be prepared for is a major change in perspective once you spend significant time by yourself and cope with a couple major emergencies on your own.
Have fun!