Where to credit NZ flight
 

I managed to book the NZ fare sale from Chicago to Sydney for $1500 in business class for my family of 4. The outbound is on United metal and the return is on NZ. Due to their JV it looks like if I credit the flights to UA Mileage Plus I'll only be getting 7,000 miles for the outbound (640 PQD and I'm a 1K) and I'm assuming 23,000 miles for the return (18,500 distance * 1.25 class fare bonus for Z class on ticket that doesn't start with 016).

I'm looking at the where to credit site and it looks like Avianca gives 200% in Z class from NZ tickets. This would be almost 75,000 miles and enough for a one way to Asia in J. Is there any other program that would make sense to credit this flight?

Thanks in advance!