Originally Posted by
azfanboy
Dates are also pretty inflexible.
Well you really can't assess upgrade odds on any particular flight this far in advance. What are your travel days? Saturday/Sunday are very difficult both directions.
I personally would not buy blind and waitlist. I would wait and watch the flights from LAX and DEN as well as SFO for PZ. As jsloan notes, the SFO routing does you no good if your upgrade doesn't clear. Also, the 77W is your worst option in Y. If you're set on buying now, you might consider buying PE, as that will put you ahead of all Y pax on the upgrade list.
You might also keep in mind that the SFO Polaris lounge is the weakest in the system. From all reports, LAX is better. And for two pax traveling together, the 789 is not a bad choice (though I far prefer the 77W as a solo traveler).