2 DVR's + 4 Streaming Devices with Xfinity App

Hello,

We have 6 TVs, of which 2 have a Set-Top Box with DVR's and the remaining have non-DVR set-top boxes. Since the STB prices are getting pretty expensive, I am keeping the 2-DVR's and using a streaming device, whether it be Roku, FireStick, or Xumo Stream Box with the Xfinity App for the other TVs to watch pre-recorded & live shows and movies etc., and others like Netflix, Prime Video, HULU.

We have an unlimited data plan on our Internet, so can I assume that using the streaming devices will be okay? I can't think of another way to cut some costs other than to eliminate 4 of the non-DVR STBs. We have been with Comcast/Xfinity for 20 plus years, and I have to call them to see if we can save some cost somewhere - usually it's only good for a year though, so I have to call customer service and try again.

If anyone has any suggestions, please give your input.

Thank you in advance.