I've ordered a 15' Intex Easy Set, and I'm trying to decide where to put it. We have a walkout basement that has a large patio with high retaining walls on both sides. Because the patio is concrete and level, this seems like the easiest place to put the pool, but would it be safe? I have no experience with pools, so I don't know how to assess the risk of having 3k gallons of water a foot from the walkout basement of the house. What do you think?