Hi LesCenter & welcome to the forums.
The X-10 security sensors I use are wireless technology. The window and door sensors relay distance is greatly enhanced by use of a repeater. Now that said regarding your block & stone structure the front side of my house is large rock with no windows, I have not had any problem with the cams or motion sensors there with the receiver approx. 30 - 40 ft away. I would recommend that you start with a small inexpensive package and work by trial and error. Don't actually install the products, just set-up your software, insert batteries and move the sensors to different areas of your home to test the reliability. You have a 30 day money back guarantee on your purchase so you have nothing to loose but a little time and set-up if you are willing to go to the effort.