...In regards to storm window protection I had not thought or heard of this... any suggestions? I will also talk to the vendor about it.
As for self-steering... I am not sure yet but it will be a combination of autopilot, radar and GPS. I have done a couple of sails in Bass Stait and up and down the East Coast of Australia to know how important this is (and have had the autopilot die on me)...
The "Deck Salon" is a popular design feature that really creates a lot of light and openness below decks in the main salon. But it comes with a price: Those giant windows are a potential liability in storm conditions off-shore.
Personally, I would not choose a design like this for extensive off-shore sailing, but that's your call. Regardless, you need to have a plan to address the possibility that you could have a large hole in the mid-deck of your boat during bad conditions, or to prevent that from happening in the first place (hence the storm shutters)
On the autopilot, you might be wise to have completely redundant systems installed, especially if you will be shorthanded during some of the longer passages. I'm not sure how easy it would be to install a windvane on this design, but you might consider one instead. 13000 miles is a long way to count on a single electronic autopilot.
Sail inventory: You'll want a full complement of sails. Probably 2-3 minimum of working headsails of different sizes and construction weight. A reefable, cruising weight mainsail. Storm sails (storm jib, storm trysail) and any necessary hardware to fly them. Spinnakers for light air, with a pole and associated hardware/control lines. Others?
You'll also want drogues and sea anchors, but that's a subject for another thread.