Nice setup. I use the 1/3 scale targets from Stoeger's Pro Shop and have them thumb tacked to the walls and cabinets in my upstairs bonus room and the adjoining hallways. The longest distance I can get is 28', so that roughly translates into 28 yds using the 1/3 scale targets.
Using the arrangement of the doorways, walls, 90 deg corners etc... I basically have a few options for setting up different drills and try to use those in conjunction with the dry-fire drills in Stoeger's books. I need to paint one wall a different color so the poppers and plates stand out better. For now I just have them up against colored xerox paper.