I would like to fly 4 people in business class SFO-EZE in March 2014. I should be able to get enough miles by about 5-6 months before departure. It will be aggressive (multiple credit cards, some creative spend) but I'm fairly certain I can pull it off. My biggest concern is whether it is realistic to find 4 award tickets in J on the same flights? Two pax are kids, so a) we cannot split up, and b) we strongly prefer straightforward routing, ideally one connection. My other option is UA miles, but my feeling is that UA availability could be even tougher... although I have the miles already, so can theoretically book as soon as flights are loaded. What would you suggest? Thanks!