China Southern: A380 business class seats for family of 4
 

I have an upcoming trip on a China Southern A380 in business class. There will be 4 of us, including 2 children, and I'm trying to figure out which seats will work the best -- from a perspective of keeping an eye on the kids and helping them with meals, as well as generally being able to chat with one another from time to time. From some pictures, I think the pairs of E/F inside seats have a removable divider, so they are pretty close together. Is this correct? If so, I could pick two of these pairs 2 rows apart (say, 20E/F, 22E/F). Can I do any better than that? How close together are the pairs of seats across an aisle (say, 19G/H)?

Also, when I booked the flight it only prompted me to enter frequent flyer numbers for the two adults. Do child fares not get mileage credit? Or is there another way to enter that information?

Thanks for any advice!