So I'm in the stages of planning the landscaping of my side yard. It is on the south side of the house. I'm going to plan on planting 6 hydrangeas. I will be planting 3 Crape Mrytles to shade them. Currently I have an ES Original in a pot which I thought about transplanting to this area. But not sure of what other varieties to plant. I want them to be at least about 4'x4'. I've included a sketch of what I would like it to look like. Don't laugh! : )

Any recommendations on which to plant is very welcomed and appreciated.