Knock downs don't happen often, but can. Most cruisers don't see the sea conditions which may knock them on their beam ends, but it does happen.
What must be remembered is this simple truth, that the millions of miles, under the keels of thousands of cruisers, aren't news worthy, because they didn't get sunk, knocked down or other ill event.
It would be nice to have prepared for every eventuality, but this is hardly possible and have room to stow your stuff too.
Your boat has a fair amount of windage, large ports and a pretty vulnerable deckhouse structure. Storm shutters for those ports and a stout companionway at both ends of the house will make you much more secure in a big blow. The best advise is watch the weather and try not to let a schedule dictate your passages across green water. This point alone can save your life, as many have tried to make a port for scheduling reasons, just to get caught in weather that could have been waited out.
Carry spares of every sort, regularly run MOB drills practicing recovery techniques. Use you safety equipment. A fancy tether can't help if it's stowed in a locker. Maintain a constant watch and be aware of your and other vessels position in relation to your own position. Keep your friends and family abreast of your planned schedule, including spur of the moment revisions, so they can contact you or authorities if you don't arrive where and when you said you would.
There are many books on outfitting and cruising in deep water. Try the BoatDesign book store or your favorite book seller. Cruising is a wonderful life, enjoy and sail safe. White knuckled helm sessions are for big budget ocean racers and aren't much fun, unless you like breaking equipment, the backs of your crew and bashing your boat into a short life span. Nothing can't wait 24 hours, so that a big low pressure area can clear the scene so you can have a safe, uneventful passage. You'll still get your thrill rides, from time to time, but you don't have to go looking for a butt kicking.