Good Morning, It am working an estimate for a pool deck and Retaining wall. I have a project that I am trying to price in the D.C. area but do not want to scare the home owners. They are looking for a natural flagstone look that does not get hot and will not be hard on the toes. I called my quarry and was recommended three stones Silver Lake ($7/sq.ft.) Canyon View ($7/sq. ft.) and irregular oak valley at ($12/sq.ft.). The decking area is 2015 sq. ft. of dirt left by the pool guys. I have to build concrete base and install over that. There is also about ~225 Ln. Ft. of retaining wall to be built @ ~775 sq. ft. of surface area. How much would you charge for everything? Thank you!