First off, I would suggest buildings 30 and higher. With 3 young ones, you might want them to have access to the bathroom without having to go through the master bedroom. For this reason, I would probably eliminate building #19 from your consideration. In addition, this building is smoking optional.
41 would be an excellent location, right beside the Turtle Pond pool. This is a smoking-optional building so you might want to also consider #42 and #43. 44 is right where the bus turns around, so you might want to avoid this one due to noise.
The map I have shows that buildings 55 & 56 in the South Point area are both adjacent to the pool in this area. 56 might be the best selection of the two, as it is closer to the South Point bus stop.