While this may be true for flights a few months down the road, this flight consistently opens up in both First and Business as one gets closer to flight date. Like a fine Swiss watch, LX releases additional F and C award inventory at precisely T-14. And considering OP is planning a January trip when SF is least crowded with visitors, I can't see any reason why he would not find plenty of last minute premium LX options. If OP is not comfortable with waiting, book what is available now on any *A airline, then change once inventory opens in the two weeks prior to departure.