Too many XFI Pods?

Long story short, I have a security camera system that is having issues with uploading their recorded videos to the cloud. The security company said I needed Wi-Fi extenders to improve my Wi-Fi signal throughout the house. I grabbed a two pack of XFI Pods. 

My house is a 3 bedroom and a total of 2300 sq. feet of finished space, but with the basement / garage it is 4900 sq ft. I also have Wi-Fi devices in the unfinished space in the garage / basement. My XB7 Gateway is near the center of the house in my office on the 1st floor. It is on top of my desk, which is completely open around it. I have Wi-Fi devices on the 2nd floor, 1st floor, unfinished basement, and garage. Since I have Wi-Fi devices outside the house in the yard and garage, I placed once of the XFI pods in my mudroom, which is opposite the side of the house where the router is. This helped tremendously with the devices in the garage and outside the house. 

My question is I don't know where to place the second XFI Pod. It doesn't seem to get more than 2 devices connecting to it no matter where I place it. I put it in the extended family room, the basement, and the second floor and it never seems to get much use. 

Any suggestions here? Do I need the second one? Am I over analyzing this and it is working fine? It was mentioned these make a mesh network so I don't know if it really hurts having 2 pods even if only a few devices pick-up on it?