Your trip in Swiss First Class will be most enjoyable. If you are traveling alone or even with someone else I would recommend the window seat. The second pax, if there is one, can take another window seat on the same side as yours or just opposite you in the middle row of two seats on your side. I say this because of the dining arrangements. If you are both in the middle row it is not as convenient to move to the other person's table, plus there is a substantial barrier between the middle row seats. The dining table is large enough for two to eat together. One person sits on an ottoman that moves back and forth on a rail. The ottoman's position is contolled from the pax seat. The ottoman also becomes part of your sleeper. I know this to be the case on the MD11 and the Airbus 330.
My wife and I have flown two round-trips to ZRH from Miami in Swiss (Air) first and will do so again in June. I always use miles to get our tickets as the direct cost is way beyond what would be a prudent purchase for me. It's a great way to get spoiled. After our first trip in Swiss (Air) first class, I overheard my wife talking on the phone to a mutual friend. She said: "It was like going to a great restaurant and then going to bed without having to drive home". I know she is now spoiled for life!
I hope your trip in first class will be as great as ours have been.
WNF