A fabulous trip!!!
If I were you, I would try to pick up some crew -- that will certainly be strenuous
single handed.
The nerves are normal -- as you said, healthy respect. A good sign
Remember fools rush in where angels fear to tread.
I would echo Boatman's
advice -- go through the boat thoroughly, very very thoroughly, concentrating on all the issues which concern watertight integrity,
steering,
propulsion, and
emergency comms. Once you are 101% sure that all those systems are tip top, and you have all necessary spares and tools on board, then you can start thinking about the other systems. It's not rocket science, and thorough preparation should greatly reduce any risks. Mark's
advice is also excellent
Both of these guys are speaking from vast experience.
Then just be very thorough and careful about the
weather, and you should be fine.
All the best; what a fabulous voyage. All of us here will be envying you. Keep us updated.