My husband and I are flying SFO to AUX on a Boeing 777-200 in a couple of weeks. Right now we're in the back of the plane in a window and a middle seat. As of today we can upgrade to a skycouch for $600, or we can try OneUp to upgrade to Premium Economy. It doesn't look like other upgrade options are available? Should we go SkyCouch, should we make a OneUp offer, or should we stick with what we have? Thanks in advance!