We are preparing to set up our Intex Ultra Frame pool (24' x 12' x 52") on Friday and have a couple questions. The ground has been leveled, and we are in SC, so we have the lovely red clay for dirt Should we go with masonry sand, extruded polystyrene, or both? What about a gorilla pad? My other question is about the support under the legs. Which is better, wood or concrete pavers? We want to do this right the first time, so any suggestions are much appreciated!