next week we will be starting a project for a customer. her backyard has an inground pool that is raised on a slope as compared to the backyard. her problem is that the soil around the pool is eroding down and lessening the slope. heres where we come in, we will be installing an 85 linear foot long versa-lok wall that runs the direction of the backyard then makes a 45 degree turn to the right then straight then another 45, so basically three straight sections. the middle 18 foot section will be 3.5' high and then the grade goes up for the two ends so that the wall height will only be 2 feet. behind the wall we are doing the standard drain tile set up with a #57 fill then dumping soil to make the area between the wall and the pool level(slight grade for washoff). and now with the area between the pool and wall will have flagstone installed(customer's minds change all the time) So between the pool and wall is approx. 11 feet. so a total of 817 sq. feet of flagstone. with 5 3'x3' planters cut out of the flagstone. the total cost of the job is approaching 7 thousand mayb more. just wanted to know if anyone has any advice id appreciate it.