I am. currently have a scissor lift, but want a two post. Will be documenting the actual position of the pex lines as much as I can before the pour. But also, the slab is 6" thick and those pex lines will be at the bottom. With the typical 4" or so minimum embedment of the wedge anchors, risk of hitting a line will be minimized. I'm not 100% sure where exactly I'm going to put it so wasn't too keen on leaving a clear areaUp until recently that wood probably cost more than the pour. Looking good. Are you planning for a future lift installation?