So in the last few months we've been busy researching, reading many posts on this forum, and communicating with others that are building similar backyard projects. We've finally decided that we are not going to do an owner build, but will be hiring a pool builder, and a GC for our roof. We've currently got a 23'x54' concrete pad in our back yard. We are going to build a truss roof to cover the entire pad, and then 5' our from the current pad start the pool. The swimmable area of the pool will be 16x32 not including the spa and sunshelf 23'x32' including them. We'll have an 8x6 spa, and a large sun shelf. We are currently debating between ivory Travertine and polsihed Ivory Shellock. We like the look of the travertine, but are concerned with its durability and maintenance. Our pool builder claims that the travertine they use is of a better quality and that there's no need to be concerned with having it with a salt water pool. Our pool builder uses all pentair products. We'll have a pentair intellicenter for automation / control. (I know very little about these, any help would be appreciated.) We will have 2 pumps. The main pump will be the Pentair 3HP variable speed pump. We'll also have a pump for the water features 2 or 4 deck jets (yet to 100% decide) and 3 bublers on the sunshelf. We'll be using the a pentair salt cell (I don't know which off the top of my head, but was assured it'd be the largest they make) We'll have a 400k BTU propane pentair propane heater and a pentair DE filter I believe 75 sq ft. (is this large enough?) For the interior we're planning on using Alpine Blue pebblesheen. Any items I should be asking for from the pool builder? I've been assured all plumbing will be at least 2" (they claim to have an engineer or a specialist or something who will design the plumbing system. I don't have those details yet, but will have to sign off on them) I've instructed not to use ball valves (only rebuildable valves), there will be unions at all the equipment, and they'll be making a bypass for the heater. Any other things I'm not thinking of? I've attached photos of our drawing for the truss roof, a shot of the yard currently, a first draft of the design (the spa will no longer be rasied) and a 2D which is our current design. Any input would be GREATLY appreciated! Thanks everyone!